but-

From butyl. Ultimately from Ancient Greek βούτυρος (boúturos, “butter”).

but-

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

• metho-
• eth-
• prop-

• butane
• butanol
• butyl

• BTU, TBU, tub

• IPA^(key): /byt/

but-

1. (organic chemistry) but-

• Category:nl:Hydrocarbon chain prefixes

• IPA^(key): /but/

but-

1. (organic chemistry) but-

• Category:de:Hydrocarbon chain prefixes