plural of cross purpose. / (plural-noun) Conflicting, or contrary meanings or ideas, usually arising unintentionally.

(UK politics, of a member of a parliament) To vote against one’s own political party in parliament.

A person who wears clothing which society considers appropriate only for members of the opposite sex.

(chemistry, of a polymer) Having links between adjacent chains.

(Britain) Having both eyes oriented inward, especially involuntarily.

simple past tense and past participle of cross-link

(chemistry) A covalent bond (or series of bonds) between adjacent chains of a polymer / (biochemistry) A similar bond between strands of nucleic acid

(chemistry) To join polymer chains together to form one single molecule. An object made from a crosslinked material contains only one supergiant molecule. Crosslinking may take place through covalent bonds or ionic bonds

(transitive) To question (someone) closely in order to verify facts, or information previously given. / (intransitive) To question a trial witness who has already been questioned by the other side.

(idiomatic) To overstep a boundary, rule, or limit; to go too far or do something unacceptable. / To finish a race. / To achieve completion of something. / To cross the equator, as a vessel at sea.