13-Letter Words Containing: A,C,E,O,R,R

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

• an antineoplastic drug used to treat Hodgkin's disease

• a compiler or writer of a dictionary; a student of the lexical component of language

• a board having 64 squares of two alternating colors

• decoder skilled in the analysis of codes and cryptograms

• Any therapy based on the circadian rhythm or other cyclical schedule.