octan

[ ok-tuh n ]
/ ˈɒk tən /

adjective

(of a fever) occurring every eighth day.

noun

an octan fever.

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Origin of octan

1895–1900; < French octane, Middle French octaine, derivative of Latin octō eight, on the model of quartaine quartan
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2020

Medical definitions for octan

octan
[ ŏktăn′ ]

adj.

Occurring every eighth day. Used of a recurring fever.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.