15-Letter Words Containing: S,E,X,E,R

• The fused head and thorax of spiders and crustaceans

• extinct primitive toothed bird of the Jurassic period having a long feathered tail and hollow bones; usually considered the most primitive of all birds

• greater than normal extension

• a sexual attraction to (or sexual relations with) persons of the opposite sex

• an empirical doctrine that advocates experimental principles

• an orientation that favors experimentation and innovation

• the coreferential relation between a reflexive pronoun and its antecedent

• (logic and mathematics) a relation such that it holds between an element and itself