変項 is read as へんこう (henkou) and means variable.
へんこう
henkou
そくばくへんこう
bound variable
かへんはんぷくでーたこうもく
variable occurrence data item
へんたい
abnormality
へんせん
change
へんせつ
betrayal
へんい
variation
へんてつ
something unusual
へんそうきょく
へんげん
transformation
へんたいしんりがく
abnormal psychology
へんたいしんり
abnormal mentality
へんどうりつ
volatility