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or -ol
1. A usually heterocyclic chemical compound containing a five-membered ring: pyrrole.
2. A chemical compound, especially an ether, that does not contain hydroxyl: eucalyptol.

[Partly from French (from Latin oleum, oil; see oil) and partly variant of -ol.]




n combining form
1. denoting an organic unsaturated compound containing a 5-membered ring: thiazole.
2. denoting an aromatic organic ether: anisole.
[from Latin oleum oil, from Greek elaion, from elaia olive]


indicating something small: arteriole.
[from Latin -olus, diminutive suffix]



interj., n., pl. o•les. interj.
1. (used as a shout of approval, triumph, or encouragement.)
2. a cry of “olé.”
[1920–25; < Sp (h)ole, probably of expressive orig.]


a suffix found in French loanwords of Latin origin, usu. diminutives, and later in adaptations of words borrowed directly from Latin or in New Latin coinages: areole; centriole; vacuole.
[< French < Latin -olus, -ola, -olum, variant of -ulus -ule with stems ending in a vowel]


or -ol

a suffix used in the names of chemical compounds, esp. five-membered, unsaturated rings (carbazole; indole; thiazole) and, less systematically, aromatic ethers (phenetole).
[< French < Latin oleum oil]