Definition of para- in English:

para-

Syllabification: para-
(also par-)

prefix

2 Chemistry Denoting substitution at diametrically opposite carbon atoms in a benzene ring, e.g., in 1, 4 positions: paradichlorobenzene Compare with meta- and ortho-.

Origin

from Greek para 'beside'; in combinations often meaning 'amiss, irregular' and denoting alteration or modification.

Definition of para- in:

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Word of the day katzenjammer
Pronunciation: ˈkatsənˌjamər
noun
confusion; uproar