tierceron

From French tierceron, from tierce (“third”) + -eron.

• IPA^(key): /ˈtɪə(ɹ)səɹɒn/

tierceron (plural tiercerons)

1. (architecture) A type of rib in Gothic vaulting, springing from the intersection of two other ribs.
   • 1901, Thomas Lennox Watson, The double choir of Glasgow Cathedral: a study of rib vaulting, page 92:

     It would carry us too far from our subject to trace the consequences of the introduction of the tierceron; it must suffice to say that it immediately affected the curvature and the moulding of the vaulting ribs and the composition of the springer.

• intercore

tierceron m (plural tiercerons)

1. tierceron

• “tierceron”, in Trésor de la langue française informatisé [Digitized Treasury of the French Language], 2012.