noun
variant concrete syntax
A computing term referring to a specific concrete syntax that is a variant of another. Used in technical contexts such as programming language design and formal specification.
この仕様では、変形具象構文を用いて拡張構文を定義している。
In this specification, an extended syntax is defined using a variant concrete syntax.
Compound of 変形 (variant, transformation), 具象 (concrete), and 構文 (syntax). A technical term likely coined in the context of formal language theory or programming language semantics.