3 definitions found
From Webster's Revised Unabridged Dictionary (1913) [web1913]:
Tertiary \Ter"ti*a*ry\, n.; pl {Tertiaries}.
1. (R. C. Ch.) A member of the Third Order in any monastic
system; as the Franciscan tertiaries; the Dominican
tertiaries; the Carmelite tertiaries. See {Third Order},
under {Third}. --Addis & Arnold.
2. (Geol.) The Tertiary era, period, or formation.
3. (Zo["o]l.) One of the quill feathers which are borne upon
the basal joint of the wing of a bird. See Illust. of
{Bird}.
From Webster's Revised Unabridged Dictionary (1913) [web1913]:
Tertiary \Ter"ti*a*ry\, a. [L. tertiarius containing a third
part fr tertius third: cf F. tertiaire See {Tierce}.]
1. Being of the third formation, order or rank; third as a
tertiary use of a word --Trench.
2. (Chem.) Possessing some quality in the third degree;
having been subjected to the substitution of three atoms
or radicals; as a tertiary alcohol, amine, or salt. Cf
{Primary}, and {Secondary}.
From WordNet r 1.6 [wn]:
tertiary
adj : coming next after the second and just before the fourth in
position [syn: {third}, {3rd}]
n : from 2 million to 63 million years ago [syn: {Tertiary}, {Tertiary
period}]
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