Monomyarian, mon-ō-mī-ā′ri-an, adj. having but one adductor muscle, as an oyster. [Gr. monos, single, mys, muscle.]

Mononym, mon′ō-nim, n. a name consisting of a single term.—adj. Mononym′ic.

Monoöusious, mon-ō-ōō′si-us, adj. having the same substance. [Gr. monos, single, ousia, essence.]

Monopathy, mō-nop′a-thi, n. (pathol.) a disease affecting only one organ or function.—adj. Monopath′ic. [Gr. monos, single, pathos, suffering.]

Monopetalous, mon-ō-pet′a-lus, adj. (bot.) having only one petal, or denoting a corolla, the petals of which so cohere as to form a tube.

Monophobia, mon-ō-fō′bi-a, n. morbid dread of being left alone. [Gr. monos, single, phobia, fear.]

Monophonous, mon-of′o-nus, adj. producing one sound at one time. [Gr. monos, single, phōnē, voice.]

Monophote, mon′ō-fōt, n. an electric arc-lamp regulator working in single series. [Gr. monos, single, phōs, phōtos, light.]

Monophthong, mon′of-thong, n. a simple vowel-sound.—adj. Mon′ophthongal.

Monophyletic, mon-ō-fi-let′ik, adj. pertaining to a single phylum:—opp. to Polyphyletic.