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

• 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

• refutation by example