semicylinder

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

noun

1. half of a cylinder divided lengthwise.

Other Word Forms

• semicylindrical adjective
• semicylindric 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.

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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.

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