evaporation

noun

evap·​o·​ra·​tion i-ˌva-pə-ˈrā-shən 

: the act or process of evaporating:

a

: change from a liquid to a vapor

evaporation of water

But warming increases the evaporation of ocean water, which could increase the snowfall on the Arctic and Antarctic ice sheets, remove water from the ocean, and lower sea level.

—Jack M. Hollander

b

: the vanishing or disappearance of something

The pope's attempt to arrest the evaporation of the Christian tradition in Europe was also unsuccessful.

—Conrad Black

No longer a machine that accelerates the evaporation of resources, in the Roman context the banquet becomes a theatre of wealth and property, of social distinction, or social-climbing.

—James N. Davidson

Examples of evaporation in a Sentence

Recent Examples on the Web

Consolidating water in Lake Mead would reduce the amount of water lost to evaporation from the reservoirs’ surfaces and to seepage into the sandstone that forms Glen Canyon. —Elise Schmelzer, Denver Post, 7 June 2026

Making the powder involves several steps, including milk testing and pasteurization, the separation of curds and whey, draining and pasteurizing the liquid whey, and then sending it to a processing facility to remove more liquid via evaporation and spray drying. —Alyssa Goldberg, USA Today, 2 June 2026

The reservoir, which is operated by Denver Water, is being drawn down for the summer, to redirect water to another reservoir where less will be lost to evaporation. —Evan Bush, NBC news, 2 June 2026

But while the goal is to recreate the original juice, the color, aroma, or nutrients can be slightly reduced during the evaporation process. —Katie Rosenhouse, Southern Living, 31 May 2026

Word History

First Known Use

14th century, in the meaning defined above

Rhymes for evaporation

• abbreviation
• abomination
• acceleration
• accentuation
• accommodation
• accreditation
• acculturation
• accumulation
• acetylation
• adjudication
• administration
• adulteration

Kids Definition

evaporation

noun

evap·​o·​ra·​tion

i-ˌvap-ə-ˈrā-shən

: the process of evaporating

Medical Definition

evaporation

noun

evap·​o·​ra·​tion i-ˌvap-ə-ˈrā-shən 

: the change by which any substance is converted from a liquid state into and carried off in vapor

specifically : the conversion of a liquid into vapor in order to remove it wholly or partly from a liquid of higher boiling point or from solids dissolved in or mixed with it

evaporate

i-ˈvap-ə-ˌrāt 

verb

evaporated; evaporating

evaporator

-ˌrāt-ər 

noun