adv. [f. prec. + -LY2.] In a longitudinal direction; in the direction of the length of an object; lengthways.
1724. in Bailey.
1779. Mrs. Boscawen, in Mrs. Delanys Lett., Ser. II. II. 489. The seeds are somewhat flat, and situated longitudinally.
1787. Linnæus Fam. Plants, I. 4. Style slit longitudinally.
1834. Mrs. Somerville, Connex. Phys. Sci., xvii. (1849), 159. The air also vibrates longitudinally.
1868. Rep. to Govt. U.S. Munitions War, App. 284. The locking device combined with a longitudinally moving breech-block.
1870. Rolleston, Anim. Life, 15. The longitudinally-fissured pancreas.
1880. Haughton, Phys. Geog., vi. 303. A broad band of latitude, extending longitudinally from the Pyrenees to the east Coast of China.
1897. Mary Kingsley, W. Africa, 540. His body was slit all over longitudinally with long cuts on the face, head, legs, and arms.