Seal (emblem) in the context of Circle of stars

Old Persian is one of two directly attested Old Iranian languages (the other being Avestan) and is the ancestor of Middle Persian (the language of the Sasanian Empire). Like other Old Iranian languages, it was known to its native speakers as ariya (Iranian). Old Persian is close to both Avestan and Vedic Sanskrit, and all three languages are highly inflected.

Old Persian appears primarily in the inscriptions, clay tablets and seals of the Achaemenid era (c. 600 BCE to 300 BCE). Examples of Old Persian have been found in what is now Iran, Romania (Gherla), Armenia, Bahrain, Iraq, Turkey and Egypt, with the most important attestation by far being the contents of the Behistun Inscription (dated to 522 BCE).

Legal instrument is a legal term of art that is used for any formally executed written document that can be formally attributed to its author, records and formally expresses a legally enforceable act, process, or contractual duty, obligation, or right, and therefore evidences that act, process, or agreement. Examples include a certificate, deed, bond, contract, will, legislative act, notarial act, court writ or process, or any law passed by a competent legislative body in domestic or international law. Many legal instruments were written under seal by affixing a wax or paper seal to the document in evidence of its legal execution and authenticity (which often removed the need for consideration in contract law). However, today, many jurisdictions have abolished the requirement for documents to be under seal in order for them to have legal effect.

A grant is a fund given by a person or organization, often a public body, charitable foundation, a specialised grant-making institution, or in some cases a business with a corporate social responsibility mission, to an individual or another entity, usually, a non-profit organisation, sometimes a business or a local government body, for a specific purpose linked to public benefit. Unlike loans, grants are not intended to be paid back. Examples include student grants, research grants, the Sovereign Grant paid by the UK Treasury to the monarch, and some European Regional Development Fund payments in the European Union.

A deed is a legal document that is signed and delivered, especially concerning the ownership of property or legal rights. Specifically, in common law, a deed is any legal instrument in writing which passes, affirms or confirms an interest, right, or property and that is signed, attested, delivered, and in some jurisdictions, sealed. It is commonly associated with transferring (conveyancing) title to property. The deed has a greater presumption of validity and is less rebuttable than an instrument signed by the party to the deed. A deed can be unilateral or bilateral. Deeds include conveyances, commissions, licenses, patents, diplomas, and conditionally powers of attorney if executed as deeds. The deed is the modern descendant of the medieval charter, and delivery is thought to symbolically replace the ancient ceremony of livery of seisin.

The traditional phrase signed, sealed and delivered refers to the practice of using seals; however, attesting witnesses have replaced seals to some extent. An agreement under seal may also be called a contract by deed or a specialty; in the United States, a specialty is enforceable without consideration. In some jurisdictions, specialties have a liability limitation period of double that of a simple contract and allow for a third party beneficiary to enforce an undertaking in the deed.

In the law, a seal affixed to a contract or other legal instrument has had special legal significance at various times in the jurisdictions that recognise it. In the courts of common law jurisdictions, a contract which was sealed ("made under seal") was treated differently from other written contracts (which were "made under hand"), although this practice gradually fell out of favour in most of these jurisdictions in the 19th and early 20th century. The legal term seal arises from the wax seal used throughout history for authentication (among other purposes).

Originally, only a wax seal was accepted as a seal by the courts, but by the 19th century many jurisdictions had relaxed the definition to include an impression in the paper on which the instrument was printed, an embossed paper wafer affixed to an instrument, a scroll made with a pen, or the printed words "Seal" or "L.S." (standing for the Latin term locus sigilli meaning "place of the seal").

Pendent is an adjective that describes the condition of hanging, either literally, or figuratively, as in undecided or incomplete. The word is to be distinguished from the spelling "pendant", which is the noun.

• In botany and anatomy the term applies to hanging forms of organs such as leaves, branches, limbs and the like, that otherwise might be rigid or erect.
• In sigillography, a pendent seal is one that hangs loose from its associated document by cords, ribbons, or a parchment tag or tail: it is thus distinguished from an applied seal, which is applied directly to the face of the paper or parchment on which the document is written.
• In various senses, such as legal matters, pendent can mean "pending" or conditional on future developments.
• In grammar a pendent sentence is incomplete in some formal sense, for example lacking a finite verb.

Something pendent may be viewed as any member of a support system (e.g. a section of a dome or, organically, a parent/guardian in a nuclear family). A pendent component of a structure or system requires one or more of the same as itself to be functional. For example, one playing card in a house of cards requires another against it in order to maintain stability. Likewise the segments of certain types of dome rely upon each other for support, as do the individual blocks or timber frames which make up a dome whether segmented or not. The whole dome may in turn be supported by pendentives (which in turn support each other). In the construction of arches and domes, the pendent condition commonly leads to special requirements for timber centring or similar expedients during construction: when the structure is completed it becomes self-supporting and the temporary structure can be removed.

A papal bull is a type of public decree, letters patent, or charter issued by the pope of the Catholic Church. It is named after the leaden seal (bulla) traditionally appended to authenticate it.

A saltire, also called Saint Andrew's Cross or the crux decussata, is a heraldic symbol in the form of a diagonal cross. The word comes from the Middle French sautoir, Medieval Latin saltatoria ("stirrup").

From its use as field sign, the saltire came to be used in a number of flags, in the 16th century for Scotland and Burgundy, in the 18th century also as the ensign of the Russian Navy, and for Ireland. Notable 19th-century usage includes some of the flags of the Confederate States of America. It is also used in the flag of Jamaica and on seals, and as a heraldic charge in coats of arms.

The obverse and reverse are the two flat faces of coins and some other two-sided objects, including paper money, flags, seals, medals, drawings, old master prints and other works of art, and printed fabrics. In this usage, obverse means the front face of the object and reverse means the back face. The obverse of a coin is commonly called heads, because it often depicts the head of a prominent person, and the reverse tails. The surface between the faces is the edge.

In numismatics, the abbreviation obv. is used for obverse, while ℞, )( and rev. are used for reverse. Vexillologists use the symbols "normal" for the obverse and "reverse" for the reverse. The "two-sided" , "mirror" , and "equal" symbols are further used to describe the relationship between the obverse and reverse sides of a flag.

In Christianity, the Seven Seals are the seven symbolic seals (Greek: σφραγῖδα, sphragida) described in the Book of Revelation.

The opening of the first four Seals releases the Four Horsemen, each with his own specific mission. The opening of the fifth Seal releases the cries of martyrs for the "Word/Wrath of God". The sixth Seal prompts plagues, storms and other cataclysmic events. The seventh Seal cues seven angelic trumpeters who in turn cue the seven bowl judgments and more cataclysmic events.

Modern typographers view typography as a craft with a very long history tracing its origins back to the first punches and dies used to make seals and coinage currency in ancient times. The basic elements of typography are at least as old as civilization and the earliest writing systems—a series of key developments that were eventually drawn together into one systematic craft. While woodblock printing and movable type had precedents in East Asia, typography in the Western world developed after the invention of the printing press by Johannes Gutenberg in the mid-15th century. The initial spread of printing throughout Germany and Italy led to the enduring legacy and continued use of blackletter, roman, and italic types.

The stamp seal (also impression seal) is a common seal die, frequently carved from stone, known at least since the 6th millennium BC (Halaf culture) and probably earlier. The dies were used to impress their picture or inscription into soft, prepared clay and sometimes in sealing wax.

The oldest stamp seals were button-shaped objects with primitive ornamental forms chiseled onto them. The stamp seals were replaced in the 4th millennium BC by cylinder seals that had to be rolled over the soft clay to leave an imprint. From the 12th century BC the previous designs were largely abandoned in favor of amphora stamps. Romans introduced their signaculum around the first century BC; Byzantine maintained the tradition in their commercial stamps.

Sealing wax is a wax material of a seal which, after melting, hardens quickly (to paper, parchment, ribbons and wire, and other material), forming a bond that is difficult to break without noticeable tampering. Wax is used to verify that something such as a document is unopened, to verify the sender's identity (for example with a seal stamp or signet ring), and as decoration. Sealing wax can also be used to take impressions of other seals. Wax was used to seal letters close and later, from about the 16th century, envelopes. Long before sealing wax was employed, the Romans used bitumen for this purpose.

A covenant, in its most general and historical sense, is a solemn promise to engage in or refrain from a specified action. Under historical English common law, a covenant was distinguished from an ordinary contract by the presence of a seal. Because the presence of a seal indicated an unusual solemnity in the promises made in a covenant, the common law would enforce a covenant even in the absence of consideration. In United States contract law, an implied covenant of good faith is presumed.

A covenant is an agreement like a contract. A covenantor makes a promise to a covenantee to perform an action (affirmative covenant in the United States or positive covenant in England and Wales) or to refrain from an action (negative covenant). In real property law, the term real covenants means that conditions are tied to the ownership or use of land. A "covenant running with the land", meeting tests of wording and circumstances laid down in precedent, imposes duties or restrictions upon the use of that land regardless of the owner.

Sigillography, also known by its Greek-derived name, sphragistics, is the scholarly discipline that studies the wax, lead, clay, and other seals used to authenticate archival documents. It investigates not only aspects of the artistic design and production of seals (both matrices and impressions), but also considers the legal, administrative and social contexts in which they were used. It has links to diplomatics, heraldry, social history, and the history of art, and is regarded as one of the auxiliary sciences of history. A student of seals is known as a sigillographer.

In the Sinosphere, seals (stamps) can be applied on objects to establish personal identification. They are commonly applied on items such as personal documents, office paperwork, contracts, and art. They are used similarly to signatures in the West. Unlike in the West, where wax seals are common, Sinosphere seals are used with ink.

Of Chinese origin, the process soon spread beyond China and across East and Southeast Asia. Various countries in these regions currently use a mixture of seals and hand signatures, and, increasingly, electronic signatures.