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

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

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.

(UK, Australia, New Zealand, games) A two-player game played on a three-by-three grid, in which players take it in turns to place their respective symbol (either a nought or a cross) in a cell of the grid, the objective being to form a row, column or diagonal of three of one's own symbol.

Fertilization by the union of gametes of different plants (sometimes of different species). / (by extension) The mutual exchange of ideas or concepts from different fields for mutual benefit.

Alternative spelling of cross-fertilization