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单词 planispiral
释义

Definition of planispiral in English:

planispiral

adjective ˌpleɪnɪˈspʌɪr(ə)lˌpleɪnɪˈspʌɪrəl
  • Forming a flat coil; of or relating to a flat spiral form, as the shell of certain molluscs (including many fossil species), the proboscis of a butterfly or moth, etc.

Origin

Late 19th century; earliest use found in The Century Dictionary. From plani- + spiral adverb.

Definition of planispiral in US English:

planispiral

adjective
  • Forming a flat coil; of or relating to a flat spiral form, as the shell of certain molluscs (including many fossil species), the proboscis of a butterfly or moth, etc.

Origin

Late 19th century; earliest use found in The Century Dictionary. From plani- + spiral [adverb].

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