plural noun Ecclesiastical.
Definition for regular tertiaries (2 of 2)
- noting or containing a carbon atom united to three other carbon atoms.
- formed by replacement of three atoms or groups.
noun, plural ter·ti·ar·ies.
Origin of tertiary
British Dictionary definitions for regular tertiaries (1 of 2)
British Dictionary definitions for regular tertiaries (2 of 2)
- (of an organic compound) having a functional group attached to a carbon atom that is attached to three other groups
- (of an amine) having three organic groups attached to a nitrogen atom
- (of a salt) derived from a tribasic acid by replacement of all its acidic hydrogen atoms with metal atoms or electropositive groups
noun plural -tiaries
Word Origin for tertiary
Word Origin and History for regular tertiaries
1650s, "of the third order, rank, degree, etc.," from Latin tertiarius "of or pertaining to a third," from tertius "third, a third," from root of tres "three" (see three). The geological sense (with capital T-) of "era after the Mesozoic" (which formerly was called the Secondary) is attested from 1794, after Italian terziari, used in this sense 1760 by Italian geologist Giovanni Arduino (1714-1795).
Medicine definitions for regular tertiaries
Science definitions for regular tertiaries
- Relating to or having a carbon atom that is attached to three other carbon atoms in a molecule.
- Relating to an organic molecule, such as an alcohol, in which the functional group is attached to a tertiary carbon.