Illustration of mosquito
mosquito
noun
mos·qui·to
mə-ˈskē-(ˌ)tō 
plural mosquitoes also mosquitos
: any of a family (Culicidae) of dipteran flies with females that have a set of slender organs in the proboscis adapted to puncture the skin of animals and to suck their blood and that are in some cases vectors of serious diseases
Examples of mosquito in a Sentence
Recent Examples on the Web
Most West Nile cases in Colorado happen between July and September, though mosquitoes can live until the first snow or hard freeze, Pastula said.
—
Meg Wingerter, Denver Post, 3 July 2025
That includes treating around 12,000 catch basins around the city, which are equipped with organic products that mosquito larvae feed upon and which prevents them from growing into adult mosquitoes.
—Molly Morrow, Chicago Tribune, 28 June 2025
The heat doesn’t bother him, and the mosquitoes don’t bite him.
—Amanda Rosa, Miami Herald, 28 June 2025
There are a couple of candidates: Oil of lemon eucalyptus can be applied to exposed skin as well as clothing and works well to repel mosquitoes and ticks, Haines says; make sure to get one with a 30% to 40% concentration, and dilute it with water before use.
—Angela Haupt, Time, 24 June 2025
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Meg Wingerter, Denver Post, 3 July 2025
That includes treating around 12,000 catch basins around the city, which are equipped with organic products that mosquito larvae feed upon and which prevents them from growing into adult mosquitoes.
—Molly Morrow, Chicago Tribune, 28 June 2025
The heat doesn’t bother him, and the mosquitoes don’t bite him.
—Amanda Rosa, Miami Herald, 28 June 2025
There are a couple of candidates: Oil of lemon eucalyptus can be applied to exposed skin as well as clothing and works well to repel mosquitoes and ticks, Haines says; make sure to get one with a 30% to 40% concentration, and dilute it with water before use.
—Angela Haupt, Time, 24 June 2025
See All Example Sentences for mosquito
Cite this Entry
“Mosquito.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/mosquito. Accessed 18 Jul. 2025.
Copy CitationKids Definition
mosquito
noun
mos·qui·to
mə-ˈskēt-ō
plural mosquitoes also mosquitos
: any of numerous two-winged flies of which the females have a needlelike structure of the mouth region adapted to puncture the skin and suck the blood of animals
Etymology
from Spanish mosquito "mosquito," literally "little fly," from mosca "fly"
Medical Definition
mosquito
noun
mos·qui·to
mə-ˈskēt-(ˌ)ō, -ə(-w)
plural mosquitoes also mosquitos
: any of numerous dipteran flies of the family Culicidae that have a rather narrow abdomen, usually a long slender rigid proboscis, and narrow wings with a fringe of scales on the margin and usually on each side of the wing veins, that have in the male broad feathery antennae and mouthparts not fitted for piercing and in the female slender antennae and a set of needlelike organs in the proboscis with which they puncture the skin of animals to suck the blood, that lay their eggs on the surface of stagnant water, that include many species which pass through several generations in the course of a year and hibernate as adults or winter in the egg state, and that include some species which are the only vectors of certain diseases see aedes, anopheles, culex
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