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
These mosquito repellent stickers stick to your clothes, not your skin, and actually work.
—
Cheryl Fenton, Parents, 24 June 2025
Over time, the mosquito population declines — potentially enough to interrupt malaria transmission altogether.
—Krystal Birungi, semafor.com, 23 June 2025
Cinnamon is used as an ingredient in mosquito repellents, usually in combination with other essential oils.
—Leanne Potts, Better Homes & Gardens, 19 June 2025
However, Zika could spread if that person is bitten by a mosquito that continues biting others.
—Katie Nadworny, Travel + Leisure, 6 June 2025
See All Example Sentences for mosquito
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Cheryl Fenton, Parents, 24 June 2025
Over time, the mosquito population declines — potentially enough to interrupt malaria transmission altogether.
—Krystal Birungi, semafor.com, 23 June 2025
Cinnamon is used as an ingredient in mosquito repellents, usually in combination with other essential oils.
—Leanne Potts, Better Homes & Gardens, 19 June 2025
However, Zika could spread if that person is bitten by a mosquito that continues biting others.
—Katie Nadworny, Travel + Leisure, 6 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 1 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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