observable

[ uh b-zur-vuh-buh l ]
/ əbˈzɜr və bəl /

adjective

capable of being or liable to be observed; noticeable; visible; discernible: an observable change in attitude.
worthy or important enough to be celebrated, followed, or observed: an observable holiday.
deserving of attention; noteworthy.

QUIZZES

DO YOU KNOW THIS VOCABULARY FROM "THE HANDMAID'S TALE"?

"The Handmaid's Tale" was required reading for many of us in school. Everyone else has probably watched the very popular and addictive TV show. Do you remember this vocabulary from the book, and do you know what these terms mean?
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decorum

Origin of observable

1600–10; < Latin observābilis remarkable, equivalent to observā(re) to observe + -bilis -ble

OTHER WORDS FROM observable

Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2020

Example sentences from the Web for observable

Scientific definitions for observable

observable
[ əb-zûrvə-bəl ]

A measurable property of a physical system, such as mass or momentum. In quantum mechanics, observables correspond to mathematical operators used in the calculation of measurable quantities. Operators that do not commute, having a nonzero commutator, correspond to observables that cannot be precisely measured at the same time, such as momentum and position. See also uncertainty principle.
The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.