D defs.my
Entry 1 sense Webster, 1913

Irrespirable

/îrĭspīr'əbəl/ · Ir·res·pi·ra·ble · IPA /ɪɹɪˈspaɪɹəb(ə)l/
01 a. Unfit for respiration; not having the qualities necessary to support animal life; as, irrespirable air.
  1. 1.
    Unfit for respiration; not having the qualities necessary to support animal life; as, irrespirable air.