different between sphingid vs sphingoid

English

sphingid (plural sphingids)

sphingid (comparative more sphingid, superlative most sphingid)

Of or pertaining to these moths.
- 1969, Vladimir Nabokov, Ada or Ardor, Penguin 2011, p. 108:
  There was a crescent eaten out of a vine leaf by a sphingid larva.

sphingoid (not comparable)

sphingoid (plural sphingoids)

(organic chemistry) Any of a class of long-chain aliphatic amino alcohols related to sphingosine.

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