English Explanatory Dictionary

but-

English dictionary entry

Meanings

prefix
  1. Denotes the presence of four carbon atoms in the parent chain when forming names of organic compounds.

Word forms

but-

Etymology

Etymology tree Proto-Indo-European *gʷṓws Proto-Hellenic *gʷous Ancient Greek βοῦς (boûs) Proto-Indo-European *tewh₂-der. Proto-Hellenic *tūrós Ancient Greek τῡρός (tūrós) Ancient Greek βούτῡρος (boútūros)der. English but- From butyl. Ultimately from Ancient Greek βούτυρος (boúturos, “butter”).

Derived words

butane butanol butyl
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