plethysmograph

noun ple·thys·mo·graph \ ple-ˈthiz-mə-ˌgraf , plə- \
Updated on: 15 Nov 2017

Definition of plethysmograph

: an instrument for determining and registering variations in the size of an organ, limb, or part resulting from changes in the amount of blood present or passing through it

plethysmographic

play \ple-ˌthiz-mə-ˈgra-fik, plə-\ adjective

plethysmographically

play \ple-ˌthiz-mə-ˈgra-fi-k(ə-)lē, plə-\ adverb

plethysmography

play \ˌple-thiz-ˈmä-grə-fē, plə-\ noun

Recent Examples of plethysmograph from the Web

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'plethysmograph.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

Origin and Etymology of plethysmograph

International Scientific Vocabulary, from Greek plēthysmos increase, from plēthynein to increase, from plēthys mass, quantity, from plēthein


Medical Dictionary

plethysmograph

noun ple·thys·mo·graph \ -ˌgraf \

medical Definition of plethysmograph

: an instrument for determining and registering variations in the size of an organ or limb resulting from changes in the amount of blood present or passing through it

plethysmographic

play \-ˌthiz-mə-ˈgraf-ik\ adjective

plethysmographically

play \-i-k(ə-)lē\ adverb

Seen and Heard

What made you want to look up plethysmograph? Please tell us where you read or heard it (including the quote, if possible).

Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!

WORD OF THE DAY

to remove or wipe out

Get Word of the Day daily email!

Test Your Vocabulary

Find the Cousins

  • a-large-tree-with-many-branches
  • Which pair shares a common word ancestor?
How Strong Is Your Vocabulary?

Test your vocabulary with our 10-question quiz!

TAKE THE QUIZ
SCRABBLE® Sprint

Test Your Knowledge - and learn some interesting things along the way.

TAKE THE QUIZ

Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!