la·bile

[ley-buhl, -bahyl]
adjective
1.
apt or likely to change.
2.
Chemistry. (of a compound) capable of changing state or becoming inactive when subjected to heat or radiation.

Origin:
1400–50; late Middle English labyl < Late Latin lābilis, equivalent to Latin lāb(ī) to slip + -ilis -ile

la·bil·i·ty [luh-bil-i-tee, ley-] , noun
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labile (ˈleɪbɪl) [Click for IPA pronunciation guide]
 
adj
1.  chem (of a compound) prone to chemical change
2.  liable to change or move
 
[C15: via Late Latin lābilis, from Latin lābī to slide, slip]
 
lability
 
n

00:10
Lability is always a great word to know.
So is flibbertigibbet. Does it mean:
a fool or simpleton; ninny.
a chattering or flighty, light-headed person.
labile (ˈleɪbɪl) [Click for IPA pronunciation guide]
 
adj
1.  chem (of a compound) prone to chemical change
2.  liable to change or move
 
[C15: via Late Latin lābilis, from Latin lābī to slide, slip]
 
lability
 
n

Collins English Dictionary - Complete & Unabridged 10th Edition
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American Heritage
Medical Dictionary

labile la·bile (lā'bīl', -bəl)
adj.
Constantly undergoing or likely to undergo change; unstable.


la·bil'i·ty (-bĭl'ĭ-tē) n.

The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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Example sentences
The study also corroborates a growing literature on the lability of the human brain.
Lots of the usual reasons for mental status changes, even emotional lability.
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