13-letter words starting with bu
- buttoned-down — conventional or conservative
- buttress root — a tree root that extends above ground as a platelike outgrowth of the trunk supporting the tree. Buttress roots are mainly found in trees of tropical rain forests
- butyl acetate — a colourless liquid with a fruity odour, existing in four isomeric forms. Three of the isomers are important solvents for cellulose lacquers. Formula: CH3COOC4H9
- butyl alcohol — any of four isomeric alcohols, C4H9OH, obtained from petroleum products: used as solvents and in organic synthesis
- butyl nitrite — a volatile liquid, C 4 H 9 NO 2 , the vapor of which can cause headache and vasodilation, used as an active ingredient in some household deodorizers, and misused by inhalation to prolong the sensation of orgasm.
- butyraldehyde — a colourless flammable pungent liquid used in the manufacture of resins. Formula: CH3(CH2)2CHO
- butyrophenone — a drug used to treat psychiatric disorders
- butyryl group — the univalent group C 4 H 7 O–.
- buzzard's bay — an inlet of the Atlantic, in SE Massachusetts. 30 miles (48 km) long.