ir·re·fran·gi·ble 
(ĭr′ĭ-frănjə-bəl)
(ĭr′ĭ-frănjə-bəl)adj.
1. Impossible to break; indestructible: irrefrangible cookware.
2. Physics That cannot be refracted.
ir′re·frangi·bly adv.
- autoantigen
- autobahn
- autobiographer
- autobiographic
- autobiographical
- autobiographically
- autobiography
- autobus
- autocatalysis
- autocatalytic
- autocatalytically
- autocatalytic plating
- autocephalous
- autocephaly
- autochthon
- autochthonal
- autochthonic
- autochthonism
- autochthonous
- autochthonously
- autochthony
- autoclave
- autocoid
- autocoid
- autocomplete