See Also: blotch(medicine)
blotch(1)(dictionary)
blotch(2)(dictionary)
blotch(dictionary)

butene (iou) and blotch(1) (iou)


butene (iou)



butene noun. ['bju:ti:n] L19.
[from BUTYL + -ENE.]
Chemistry. A gaseous alkene, C4H8, of which there are three isomers. Also called butylene.
butenyl noun a radical, C4H7, derived from any of these isomers L19.

blotch(1) (iou)



blotch noun. M17.
[Partly alt. of PLOTCH noun after BLOT noun1, partly blend of BLOT noun1 and BOTCH noun1.]
A discoloured patch on the skin; a pustule, a boil. M17.
b. A plant disease characterized by areas of discoloration. E20.
leaf blotch: see LEAF noun1. sooty blotch: see SOOTY adjective.
A large irregular spot or blot of ink, colour, etc. M18.
blotchiness noun E20.
blotchy adjective E19.