semicylinder

[ sem-ee-sil-in-der, sem-ahy- ]

noun

1. half of a cylinder divided lengthwise.

Other Words From

• sem·i·cy·lin·dri·cal [sem-ee-si-, lin, -dri-k, uh, l, sem-ahy-], semi·cy·lindric adjective

Word History and Origins

Origin of semicylinder¹

First recorded in 1660–70; semi- + cylinder

Example Sentences

I made in former years such a research with regard to tuning forks of prismatic form, that is to say, of a constant rectangular section continuing even into the bent portion where the parallel branches are united by a semicylinder, at the middle of which is the wrought iron rod as well as the branches.

From Project Gutenberg

This structure was well exhibited in an abnormal specimen, in which one of the two cotyledons failed to produce a petiole, whilst the other produced one consisting of an open semicylinder ending in a sharp point, formed of the parts just described.

From Project Gutenberg