sign/sine

sign (sīn)

Noun

• Something that suggests the presence or existence of a fact, condition, or quality.
• An act or gesture used to convey an idea, a desire, information, or a command: gave the go-ahead sign.
• Sign language.
• A displayed structure bearing lettering or symbols, used to identify or advertise a place of business: a motel with a flashing neon sign outside.
• A conventional figure or device that stands for a word, phrase, or operation; a symbol, as in mathematics or in musical notation.

Verb., _{^{signed, sign·ing, signs.}}

Verb. Transitive

• To affix one's signature to.
• To write (one's signature).
• To approve or ratify (a document) by affixing a signature, seal, or other mark: sign a bill into law.
• To hire or engage by obtaining a signature on a contract: signed a rookie pitcher for next season; sign up actors for a tour.
• To relinquish or transfer title to by signature: signed away all her claims to the estate.

Verb. Intransitive

• To make a sign or signs; signal.
• To use sign language.
• To write one's signature.

sine (sīn)

Noun

• The ordinate of the endpoint of an arc of a unit circle centred at the origin of a Cartesian coordinate system, the arc being of length x and measured counter clockwise from the point (1, 0) if x is positive or clockwise if x is negative.
• In a right triangle, the ratio of the length of the side opposite an acute angle to the length of the hypotenuse.