List of 18-letter words beginning with

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There are 12 eighteen-letter words beginning with OC

occipitosphenoidal — adj. (Anatomy) occipital and sphenoidal.
occipitotransverse — adj. (Anatomy) Having the occiput facing transversely (i.e. laterally).
occulodentodigital — adj. Misspelling of oculodentodigital.
occupational␣hazard — n. A substantial risk to a worker’s physical or mental well-being… — n. (Figuratively, by extension) An unpleasant, inconvenient, or…
ocean␣acidification — n. (Climate change) The increase in acidity of oceanic waters… — n. Used other than figuratively or idiomatically: see ocean, acidification.
octabromoporphyrin — n. (Organic chemistry) Any octabromo derivative of a porphyrin…
octachlorobiphenyl — n. (Organic chemistry) Either of twelve isomers of the polychlorinated…
octacyanomolybdate — n. (Inorganic chemistry) The anion Mo(CN)₈^4-; any salt containing…
octadecatetraenoic — adj. Of or pertaining to octadecatetraenoic acid or its derivatives;…
octadehydrocorrins — n. Plural of octadehydrocorrin.
octaethyleneglycol — n. (Organic chemistry) The dihydroxy polyether formed from eight…
oculofacioskeletal — adj. Relating to the eyes, face, and skeleton.

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