noun
Technical term in logic and linguistics for an expression that indicates quantity, such as 'all' or 'some'. Compare with 量記号 (りょうきごう), which refers to a symbol representing a physical quantity.
See also: 量記号 (りょうきごう)
述語論理では、∀や∃を量化子と呼ぶ。
In predicate logic, ∀ and ∃ are called quantifiers.
自然言語の量化子には「すべて
Quantifiers in natural language include 'all' and 'some'.
Compound of 量 (quantity) + 化 (change/transform) + 子 (suffix for a small entity or element). The exact derivation is uncertain; it is a modern technical coinage for 'quantifier'.