tertiaries
plural of tertiary
• triseriate
Source: Wiktionary
Ter"ti*a*ry, a. Etym: [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.)
Definition: 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. (CH3)3C.OH.
3. (Geol.)
Definition: Later than, or subsequent to, the Secondary.
4. (Zoöl.)
Definition: Growing on the innermost joint of a bird's wing; tertial; -- said of quills. Tertiary age. (Geol.) See under Age, 8.
– Tertiary color, a color produced by the mixture of two secondaries. "The so-called tertiary colors are citrine, russet, and olive." Fairholt.
– Tertiary period. (Geol.) (a) The first period of the age of mammals, or of the Cenozoic era. (b) The rock formation of that period; -- called also Tertiary formation. See the Chart of Geology.
– Tertiary syphilis (Med.), the third and last stage of syphilis, in which it invades the bones and internal organs.
Ter"ti*a*ry, n.; pl. Tertiaries (.
1. (R. C. Ch.)
Definition: 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.)
Definition: The Tertiary era, period, or formation.
3. (Zoöl.)
Definition: One of the quill feathers which are borne upon the basal joint of the wing of a bird. See Illust. of Bird.
Source: Webster’s Unabridged Dictionary 1913 Edition
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