nu·cle·ar ( P ) Pronunciation Key (nkl-r, ny-)
adj.
Biology. Of, relating to, or forming a nucleus: a nuclear membrane.
Physics. Of or relating to atomic nuclei: a nuclear chain reaction.
Using or derived from the energy of atomic nuclei: nuclear power.
Of, using, or possessing atomic or hydrogen bombs: nuclear war; nuclear nations.
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[From nucleus.]
Usage Note: The pronunciation (nky-lr), which is generally considered incorrect, is an example of how a familiar phonological pattern can influence an unfamiliar one. The usual pronunciation of the final two syllables of this word is (-kl-r), but this sequence of sounds is rare in English. Much more common is the similar sequence (-ky-lr), which occurs in words like particular, circular, spectacular, and in many scientific words like molecular, ocular, and vascular.