Of a language or notation, such as that of formal propositional calculus: where the process of inference from premises to conclusion is explicitly laid out
Clear to the understanding; capable of being clearly understood; clear in thought or in expression; not obscure or ambiguous; as, a perspicuous writer; perspicuous statements
Clearly expressed, easy to understand; lucid. Used in logic to describe a language or notation, such as that of formal propositional calculus, where the process of inference from premises to conclusion is explicitly laid out
(of language) transparently clear; easily understandable; "writes in a limpid style"; "lucid directions"; "a luculent oration"- Robert Burton; "pellucid prose"; "a crystal clear explanation"; "a perspicuous argument"