13-Letter Words Containing: P,R,A,X

• extremely high fever (especially in children)

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

• of or relating to lexicography

• abnormal dryness of the conjunctiva and cornea of the eyes; may be due to a systemic deficiency of vitamin A

• a group of viruses including those causing mumps and measles

• The fused head and thorax of spiders and crustaceans

• (of quantities) imprecise but fairly close to correct