| ESTRILDIDS | • estrildids n. Plural of estrildid. • ESTRILDID n. any member of a genus of oscinine birds, the weaver-finches. |
| ISONITRILE | • isonitrile n. (Obsolete, chemistry) isocyanide. • ISONITRILE n. a type of organic compound, aka isocyanide. |
| MATRILOCAL | • matrilocal adj. (Of a married couple) Living with the family of the wife; uxorilocal. • matrilocal adj. (Anthropology, of a people or culture) In which newly married couples live with the wife’s family. • MATRILOCAL adj. of a form of marriage, in which the husband goes to live with the wife's group. |
| PATRILOCAL | • patrilocal adj. (Of a married couple) living with the family of the husband. • patrilocal adj. (Anthropology, of a people or culture) In which newly married couples live with the husband’s family. • PATRILOCAL adj. designating a form of marriage in which the wife goes to live with the husband's group. |
| TRILATERAL | • trilateral adj. Having three sides. • trilateral adj. Involving three parties. • TRILATERAL adj. having three sides. |
| TRILINEATE | • TRILINEATE adj. marked with three lines. |
| TRILINGUAL | • trilingual adj. Able to read or speak three languages. • trilingual adj. Expressed or written in three languages. • trilingual n. A person who speaks three languages. |
| TRILITERAL | • triliteral adj. Of word roots in Afroasiatic languages: consisting of three letters. • triliteral n. A word root in an Afroasiatic language that consists of three letters. • TRILITERAL adj. consisting of three letters. |
| TRILITHONS | • trilithons n. Plural of trilithon. • TRILITHON n. (Greek) a stone monument of two upright and one transverse slab, also TRILITH. |
| TRILLIONTH | • trillionth adj. The ordinal form of the number one trillion. • trillionth n. The person or thing in the trillionth position. • trillionth n. One of a trillion equal parts of a whole. |
| TRILOBATED | • trilobated adj. Having three lobes. • TRILOBATED adj. having three lobes, also TRILOBATE. |
| TRILOBITES | • trilobites n. Plural of trilobite. • TRILOBITE n. any one of numerous species of extinct arthropods belonging to the order Trilobita. |
| TRILOBITIC | • trilobitic adj. Of, pertaining to or containing, trilobites. • TRILOBITIC adj. of, pertaining to or containing, trilobites; as, trilobitic rocks. |
| TRILOCULAR | • trilocular adj. Having three cells or cavities. • TRILOCULAR adj. having three cells or cavities; as, a trilocular heart. |