Index of English words, starting with "or"

(1) - Organology (n.) That branch of biology which treats, in particular, of the organs of animals and plants. See Morphology.
(2) - Organology (n.) The science of organs or of anything considered as an organic structure.

(1) - Organon (n.) Alt. of Organum

(1) - Organzine (n.) A kind of double thrown silk of very fine texture, that is, silk twisted like a rope with different strands, so as to increase its strength.