Definition of "semicylindrical" [semicylindrical]

• Having the shape of a semicylinder. (adjective)

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• "The entire interior surface of the semicylindrical gallery was coated with a highly reflective white material."
• "In both sets of thumbs, Sissy's and his own, Dr. Robbins could see shafts, flat on the volar surface, smooth and rounded on the dorsal surface, that is, semicylindrical in shape."
• "Below the underside of the anchor plate, through the nine eyes of each row, all matched in position as one, big steel pins were inserted and drawn up against the plate, fitting into semicylindrical grooves, and thereby forming the first link, a double-tiered link, of a gigantic double-tiered eyebar chain that extended up through the masonry in a gradual arc until it surfaced on top."