follow Dictionary.com

Why is the ninth month called September?

imperceptible

[im-per-sep-tuh-buh l] /ˌɪm pərˈsɛp tə bəl/
adjective
1.
very slight, gradual, or subtle:
the imperceptible slope of the road.
2.
not perceptible; not perceived by or affecting the senses.
noun
3.
something not capable of being perceived by the senses:
metaphysical speculation about imperceptibles.
Origin
1520-1530
1520-30; < Medieval Latin imperceptibilis. See im-2, perceptible
Related forms
imperceptibility, imperceptibleness, noun
imperceptibly, adverb
Synonyms
2. hidden, unperceivable, undetectable.
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
Cite This Source
British Dictionary definitions for imperceptibility

imperceptible

/ˌɪmpəˈsɛptɪbəl/
adjective
1.
too slight, subtle, gradual, etc, to be perceived
Derived Forms
imperceptibility, imperceptibleness, noun
imperceptibly, adverb
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
Cite This Source
Word Origin and History for imperceptibility
n.

1670s, from imperceptible + -ity.

imperceptible

adj.

early 15c., from French imperceptible (early 15c.), from Medieval Latin imperceptibilis, from assimilated form of in- "not, opposite of" (see in- (1)) + perceptibilis (see perceptible). Related: Imperceptibly. OED marks imperceivable as "Now rare."

Online Etymology Dictionary, © 2010 Douglas Harper
Cite This Source

Word of the Day

Difficulty index for imperceptible

Few English speakers likely know this word

Word Value for imperceptibility

0
0
Scrabble Words With Friends