不等號 [－－号]

Jyutping bat1 dang2 hou6
Pinyin bù děng hào

Definitions (CC-CEDICT)
  1. inequality sign (≠, < , ≤, >, ≥)
Definitions (Wiktionary)
  1. noun
    inequality sign (any of > < ≥ ≤ ≠)