TermCymru

Results are displayed in Welsh alphabetical order A-Y
Welsh: corryn rafft y ffen
English: fen raft spider
Status B
Subject: Animals
Part of speech: Noun, Masculine, Singular
Plural: corynnod rafft y ffen
Definition: Dolomedes plantarius
Last updated: 25 March 2026
Welsh: rafft seilbyst
English: piled raft
Status B
Subject: Planning
Part of speech: Noun, Masculine, Singular
Plural: rafftiau seilbyst
Definition: System sylfeini sy’n cyfuno rafft goncrit fawr â seilbyst dwfn er mwyn rhannu pwysau’r strwythur rhwng y ddaear o dan y rafft a’r seilbyst.
Last updated: 20 November 2025