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pullulate [pullulate 词源字典]: pullulate: [17] The etymological notion underlying pullulate is of rapid ‘new growth’. It goes back ultimately to Latin pullus ‘young animal’, which also produced English pony and poultry and is distantly related to foal. From this was derived the verb pullulāre ‘grow, sprout’, whose past participle provided English with pullulate. This too originally meant ‘sprout’, a sense largely displaced since the 19th century by its metaphorical descendant ‘swarm, teem’.
=> foal, pony, poultry, pullet[pullulate etymology, pullulate origin, 英语词源]
cellular (adj.): 1753, with reference to cellular tissue, from Modern Latin cellularis "of little cells," from cellula "little cell," diminutive of cella (see cell). Of mobile phone systems (in which the area served is divided into "cells" of a few square miles served by transmitters), 1977. Related: Cellularity.
intracellular (adj.): 1876, from intra- + cellular.
multicellular (adj.): also multi-cellular, 1857, from multi- + cellular.
pullulate (v.): 1610s, from Latin pullulatus, past participle of pullulare "put forth, grow, sprout, shoot up, come forth," from pullulus, diminutive of pullus "young animal" (see foal (n.)). Related: Pullulated; pullulating.
pullulation (n.): 1640s, noun of action from pullulate.
ululate (v.): 1620s, back-formation from ululation, or else from Latin ululatus, past participle of ululare. Related: Ululated; ululating.
ululation (n.): 1590s, from Latin ululationem (nominative ululatio) "a howling or wailing," noun of action from past participle stem of ululare "to howl, yell, shriek, wail, lament loudly," from a reduplicated imitative root (cognates: Greek ololyzein "to cry aloud," Sanskrit ululih "a howling," Lithuanian uluti "howl," Gaelic uileliugh "wail of lamentation," Old English ule "owl").
unicellular (adj.): 1858; see uni- + cellular.