From sub- + arachnoidal. <span class="searchmatch">subarachnoidal</span> (not comparable) (anatomy) Alternative form of subarachnoid....
(anatomy) Pertaining to the arachnoid mater; arachnoid. arachnoidal layer <span class="searchmatch">subarachnoidal</span> pertaining to the arachnoid mater “arachnoidal”, in Webster’s Revised...
specifically between the arachnoid membrane and the pia mater. Synonym: <span class="searchmatch">subarachnoidal</span> 1988 May 19, Jack Clark, “Touch of Death”, in Chicago Reader[1], volume...
subaquarian subaquatic subaquatics sub-aqueous subaqueous subarachnoid <span class="searchmatch">subarachnoidal</span> subarboreal subarboreally subarborescent subarc subarch subarchesporial...