Definify.com
Webster 1913 Edition
Gyral
1. 
Moving in a circular path or way; whirling; gyratory. 
2. 
(Anat.) 
Pertaining to a gyrus, or convolution. 
Webster 1828 Edition
Gyral
GY'RAL
,Adj.
  Definition 2025
gyral
gyral
English
Adjective
gyral (not comparable)
References
- J[ohn] A. Simpson and E[dward] S. C. Weiner, editors (1989) The Oxford English Dictionary, 2nd edition, Oxford: Clarendon Press, ISBN 978-0-19-861186-8.