X-disease
短语n. [兽医]角化过度, 表皮角化病
发音
US
/ˈɛks.dɪ.ziz/
CA
释义与例句
name
-
1.
Any of various diseases of plants or animals whose origin was at first a mystery, especially:
Hyperkeratosis in cattle.
-
2.
Any of various diseases of plants or animals whose origin was at first a mystery, especially:
A disease of stone fruits caused by a form of mycoplasma.
词源
From the convention of using "X" as a variable to stand for something unknown.
来源:wiktionary