A representation of a number in terms of powers of a base, such as the representation of 1234 as 4⨯16²+13⨯16+2⨯16⁰ or the representation of 2345 as 2000+300+40+5.

Orbital riveting.

To form a word by a back-formation process.

A back-formation; a word formed by removing a perceived morpheme from an older word.

(logic) The result of replacing parts of an argument with letters, leaving only logic words such as "if" and "for all" unreplaced.

(astronomy) Describing a region of space in which new stars are being formed

(databases) Any of various forms of a relational database providing criteria for determining a table's degree of vulnerability to logical inconsistencies and anomalies.

(grammar) A word that substitutes for words, phrases, clauses, or sentences, whose meaning is recoverable in context.

The basic form of a word used as a dictionary entry (of any part of speech, but especially of a verb).

Alternative spelling of mid-season form