<chemistry> That variety of xylene in which the two methyl groups are in the ortho position; a colourless, liquid, combustible hydrocarbon resembling benzene.

Origin: Ortho- + xylene.

(01 Mar 1998)

orthotopic graft, orthotropic, orthotropous, orthovoltage < Prev | Next > Orth's fixative, Orth's stain, ortolan

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