ter·tia·ry /ˈtɝʃiˌɛri, ʃəri/
 (a.)第三的,第三位的,第三世紀的第三重音,第三會員,第三紀


 ter·tia·ry /ˈtɝʃɪˌɛrɪ, ˈtɝʃərɪ/ 名詞
 第三的,第三期的,特的,叔的(化學)


 tertiary
 三次式


 Ter·ti·a·ry a.
 1. Being of the third formation, order, or rank; third; as, a tertiary use of a word.
 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.
 3. Geol. Later than, or subsequent to, the Secondary.
 4. Zool. 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. 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.
 2. Geol. The Tertiary era, period, or formation.
 3. Zool. One of the quill feathers which are borne upon the basal joint of the wing of a bird. See Illust. of Bird.

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 tertiary
      adj : coming next after the second and just before the fourth in
            position [syn: third, 3rd]
      n : from 63 million to 2 million years ago [syn: {Tertiary
          period]