leontiasis noun. [li:ɒn'tʌɪǝsɪs] rare. Pl. -ases [-ǝsi:z]. M18.
[mod. Latin from Greek, from leont-, leōn LION: see -IASIS.]
Medicine. Orig., a supposedly lion-like appearance of the face due to lepromatous leprosy. Now, a similar condition (more fully leontiasis ossea ['ɒsɪǝ] [Latin osseus bony]) arising from Paget's disease (of the facial bones).

[TahlilGaran] English Dictionary ▲