epactaladj.
Etymology: < Greek ἐπακτός (see epact n.) + -al suffix1.
Anatomy.
1878 R. T. H. Bartley tr. P. Topinard ii. i. 207 The exceptionally large ossa Wormiana..an epactal, for example.
This entry has not yet been fully updated (first published 1891; most recently modified version published online June 2018).