Of recent origin.

plural of pro-form

plural of life form

(computing) A control character traditionally used to cause the printer to eject the current page of output and start a new page, more recently equivalent to a carriage return.

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

plural of sixth form

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.

The basic form of a word used as a dictionary headword.

The imprint upon the surface of a body of water that is made by a feeding trout, indicative by its form of the feeding behavior of the fish.

(linguistics) A synonymous but not identical, coexisting form (variation) of a word, such as an accepted alternative spelling.