American Heritage(R) Dictionary of the English Language, Fifth Edition. Copyright (c) 2011 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
Use "tonus" in a sentence
"In the frog's tongue, capillary tonus is very strongly developed, in that by far the majority are completely contracted."
"This tonus is influenced by the stimulation of the vestibular apparatus in the regular manner already indicated."
"If one performs the same experiment with the tongue, many hours must elapse before a similar reaction occurs, and even the slightest blood supply is adequate to maintain tonus."