Definitions
American Heritage® Dictionary of the English Language, Fourth Edition
- n. The anterior division of the thorax of an insect, bearing the first pair of legs.
Century Dictionary and Cyclopedia
- n. In Insecta, the first one of the three thoracic somites, which succeeds the head, is succeeded by the mesothorax, and bears the first pair of legs. In descriptions of Coleoptera and Hemiptera the term is often restricted to the broad shield, or pronotum, forming the part of the thorax seen from above. In the Hymenoptera, Diptera, and Lepidoptera the prothorax is generally so small as to be hardly distinguishable. See cuts under Coleoptera, Insecta, mesothorax, and metathorax.
- n. See the adjectives.
Wiktionary
GNU Webster's 1913
- n. The first or anterior segment of the thorax in insects. See
Illusts . of butterfly and coleoptera.
WordNet 3.0
- n. the anterior part of an insect's thorax; bears the first pair of legs
Examples
“Many of the names which he proposed are still in use; it was he who introduced the terms prothorax, mesothorax, and metathorax, for the three segments of the insect's thorax.”
Form and Function A Contribution to the History of Animal Morphology
“The head, if rather narrow, is distinct, and beneath the prothorax is a characteristic sclerite known as the 'anchor process' or”
“This very singular genus differs from all the Stridulantes in the size and shape of the prothorax; in the neuration of the elytra it is allied to PLATYPLEURA (Amyst and Serville) in the size of head and hairiness of body it approaches CARINETA of the same authors.”
“Of a brownish ash colour, the hairs on upper part of body short and deep brown, on the sides and under parts long and grey; prothorax varied with black, in front, two large patches covered with grey hairs, mixed with longer; elytra spotted and varied with brown, wings clear, somewhat ferruginous at the base.”
“Description size: 2 - 3 mm shape: slim, cylindrical colour: red-brown to black-brown recognition: head concealed beneath prothorax”
“S. granarius (Granary weevil): without spots on elytra, punctures on prothorax oval-shaped.”
“Description size: 1.5 - 2.5 mm shape: tiny, flat and slender, elongate colour: reddish brown recognition: head and prothorax account for half of the body length: prothorax bearing two longitudinal ridges; antennae without club and half the length up to the length of the body”
“Description size: 2.5 - 3.5 mm shape: more or less cylindrical colour: black-brown with four reddish spots on the elytra recognition: well defined snout: elbowed and clubbed antennae; circular punctures on the prothorax; can fly”
“Description size: 2.5 - 3.5 mm shape: slender colour: dark brown recognition: six toothlike projections along each side of the prothorax”
“Its entire prothorax burst through the cocoon as if someone had created it instantaneously.”
An East Wind Coming
Lists
These user-created lists contain the word ‘prothorax’.
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Logolepsy
"Luciferous Logolepsy is a collection of over 9,000 obscure English words. Though the definition of an 'English' word might seem to be straightforward, it is not. There exist so many adopted, deriv...
Anschauung, Areopagus, Argus, Briarean, Dei gratia, Dei judicium, Deo volente, Duecento, Foehn, Geflugelte Worte, Gegenschein, Hakenkreuz and 9230 more...

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