a. [f. TRANS- 3 + L. insula island: cf. insular.]
1. Crossing or going across an, or the, island.
1879. The Gazette (Montreal), 28 Jan., 2/3. The construction of a trans-insular railway within a reasonable time would be naturally one of the first conditions of union [of Newfoundland with Canada].
1895. Buffalo Current Hist. (N.Y.), V. 404. When the colony [Newfoundland] would have to work its transinsular railway system.
1900. Engineering Mag., XIX. 684. Any trans-insular railroad project is chimerical.
2. Anat. Applied to a fissure of the brain that crosses the insula or island of Reil, and divides it into a cephalic and a caudal region.
1889. Bucks Handbk. Med. Sc., VIII. 160/1. Normal, human subfissures are the transinsular and others crossing the surface of the insula.