co·e·ta·ne·ous 
(kō′ĭ-tānē-əs)
(kō′ĭ-tānē-əs)adj.
Of equal age, duration, or period; coeval.
[From Late Latin coaetāneus, a contemporary : Latin co-, co- + Latin aetās, age; see aiw- in the Appendix of Indo-European roots.]
co′e·tane·ous·ly adv.
- pyronine
- pyrope
- pyrophoric
- pyrophosphate
- pyrophosphatic
- pyrophosphoric acid
- pyrophyllite
- pyrosis
- pyrostat
- pyrosulfate
- pyrosulfuric acid
- pyrotechnic
- pyrotechnical
- pyrotechnically
- pyrotechnics
- pyrotechny
- pyroxene
- pyroxenic
- pyroxenite
- pyroxenitic
- pyroxylin
- pyroxyline
- pyro•technist
- pyrrhic
- Pyrrhic victory