a rational number that is equal to the square of another rational number.
a polynomial that is the square of another polynomial.
noun, Mycology. 1. a phase in the life cycle of certain fungi in which sexual spores are formed, as the asci in the sexual stage of the ascomycete. perfect stage n. The sexual phase in the life cycle of a fungus in which spores are produced following nuclear fusion.
noun 1. a detrimental or calamitous situation or event arising from the powerful combined effect of a unique set of circumstances: a perfect storm battering corporate pension plans. noun 1. a combination of events which are not individually dangerous, but occurring together produce a disastrous outcome noun a weather pattern involving the collision of a […]
noun 1. See under . noun 1. the lunisolar calendar used by Jews, as for determining religious holidays, that is reckoned from 3761 b.c. and was established by Hillel II in the 4th century a.d., the calendar year consisting of 353 days (defective year) 354 days (regular year) or 355 days (perfect year or abundant […]
[per-fur-vid] /pərˈfɜr vɪd/ adjective 1. very fervent; extremely ardent; impassioned: perfervid patriotism. /pɜːˈfɜːvɪd/ adjective 1. (literary) extremely ardent, enthusiastic, or zealous adj. 1830, as if from Latin *perfervidus, from per- “completely” (see per) + fervidus (see fervid). Related: Perfervidly.