costa
noun
a rib or riblike part.
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costa
1 American
[kos-tuh, kaw-stuh]
/ ˈkɒs tə, ˈkɔ stə /
noun
costae
plural
-
a rib or riblike part.
-
the midrib of a leaf in mosses.
-
a ridge.
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Entomology.
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Also called costal vein. a vein, usually marginal, in the anterior portion of the wing of certain insects.
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Also called costal margin. the anterior edge or border of the wing of certain insects.
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Costa
2
American
[kaw-stuh]
/ ˈkɔ stə /
noun
costa
British
/ ˈkɒstə /
noun
-
the technical name for rib 1
-
a riblike part, such as the midrib of a plant leaf
costa
Scientific
/ kŏs′tə /
costae
plural
Other Word Forms
Derived Forms
Inflected Forms
Nouns
Etymology
Origin of costa
1865–70; < Latin: rib, side. See coast
Example Sentences
Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.
See Examples For:
Just inside the second line of the fore wings, near the costa, is a small but conspicuous brown spot.
From Butterflies and Moths (British) by Furneaux, William S.
Thallus dichotomous, copiously reticulate and porose, with a narrow costa; gemmæ none.
From The Manual of the Botany of the Northern United States Including the District East of the Mississippi and North of North Carolina and Tennessee by Gray, Asa
On the middle of the costa is a short dark streak.
From Butterflies and Moths (British) by Furneaux, William S.
Thallus thickened in the middle by a keeled costa, usually conspicuously porose, with dark purple scales beneath; gemmæ none.
From The Manual of the Botany of the Northern United States Including the District East of the Mississippi and North of North Carolina and Tennessee by Gray, Asa
Fructification arising from the under side of the costa.
From The Manual of the Botany of the Northern United States Including the District East of the Mississippi and North of North Carolina and Tennessee by Gray, Asa
In their 2021 book Peril, Bob Woodward and Robert Costa uncover a broader angle on Graham’s ponying up to power.
From Slate ● Jul. 13, 2026
That came on the back of a dismal World Cup in Brazil where England finished bottom of their group, signing off with a 0-0 draw against Costa Rica for their only point in the tournament.
From BBC ● Jul. 13, 2026
The Europeans made plans to meet again, this time on Feb. 12, in a Belgian castle built by the Knights Templar, for a discussion Costa slated under “a new geoeconomic context.”
From The Wall Street Journal ● Jul. 8, 2026
Rescuers from the United States, Chile, Portugal, El Salvador, Mexico, Costa Rica, and Venezuela shared angst, and finally joy, when Gil emerged from his confinement around 9:00 a.m. on July 2nd.
From Barron's ● Jul. 7, 2026
Later, when Mr. Costa came in to sweep, he listened to the radio sing a mournful song about a lonely truck driver in jail who longed for his eighteen-wheel rig and the open highway.
From "Ralph S. Mouse" by Beverly Cleary
Its costae are very short, and retrusible; its two tentacles are pinnate and are also retrusible.
From Encyclopaedia Britannica, 11th Edition, Volume 7, Slice 7 "Crocoite" to "Cuba" by Various
Coeloplana is of similar form and habit, with two Ctenophoran tentacles: it has no costae, but is uniformly ciliated.
From Encyclopaedia Britannica, 11th Edition, Volume 7, Slice 7 "Crocoite" to "Cuba" by Various
True costae always correspond to the septa, and are in fact the peripheral edges of the latter.
From Encyclopaedia Britannica, 11th Edition, Volume 2, Slice 2 "Anjar" to "Apollo" by Various
Shells globular, but having radiating and tuberculated costae.
From Encyclopaedia Britannica, 11th Edition, Volume 5, Slice 6 "Celtes, Konrad" to "Ceramics" by Various
Shell not carinated, but with radiating costae, which are often bifurcated, aperture often with lateral projections which contract it, aptychus formed of two pieces.
From Encyclopaedia Britannica, 11th Edition, Volume 5, Slice 6 "Celtes, Konrad" to "Ceramics" by Various
Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023
Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.
