Rarely used term meaning apparently pernicious, denoting a condition or disease that appears to be pernicious or malignant. ... (05 Mar 2000) ... 
Type: Term Pronunciation: per-nish′ē-os′i-fōrm Definitions: 1. Rarely used term meaning apparently pernicious, denoting a condition or disease that appears to be pernicious or malignant.
perniciosiform In medicine, seemingly pernicious; a term applied to a condition which is apparently, but not actually, pernicious or malignant.