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Antebrachium

Noun, pl. antebrachia 1. The forearm. 2. The forearm, i.e. the part of the arm between the elbow and the wrist. (biology-online.org) Word origin: From Latin ante– (before) + brachium (the upper...

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Antenna

/anˈtenə/ Noun, pl. antennae or antennas   1. In biology have historically been paired appendages used for sensing in arthropods. More recently, the term has also been applied to cilium structures present in most cell types of eukaryotes. (wikipedia.org) 2. Either of a pair of long, thin sensory appendages on the heads of insects, crustaceans, and some other arthropods. (Google Dictionary) 3. One of the jointed, movable, sensory appendages occurring in pairs on the heads of insects and most other arthropods. (dictionary.com)   Word origin: From Latin antenna, nautical term for yard and common term for pole, of unknown...

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Antrum of Highmore

1. Pyramid shaped maxillary sinus that is the largest of the paranasal sinuses, and drains into the middle meatus of the nose. It is present at birth as rudimentary air cells, and develops throughout childhood. (wikipedia.org) 2. A large, pyramidal in shape, air-filled paranasal sinus within the body of the maxilla, communicating with the middle meatus of the nose on the same side. (biology-online.org) Syn: maxillary antrum, maxillary sinus, Highmore’s...

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Anus

ˈā-nəs Noun 1. An opening at the opposite end of an animal’s digestive tract from the mouth. Its function is to control the expulsion of feces, unwanted semi-solid matter produced during digestion, which, depending on the type of animal, may include: matter which the animal cannot digest, such as bones; food material after all the nutrients have been extracted, for example cellulose or lignin; ingested matter which would be toxic if it remained in the digestive tract; and dead or excess gut bacteria and other endosymbionts. (wikipedia.org) 2. The posterior opening of the alimentary canal. (merriam-webster.com) 3. (Anatomy) The lower opening of the alimentary canal, through which feces and flatus are ejected. (wiktionary.org)   Word origin: From Latin anus, meaning “ring, anus”, which is from the Proto-Indo-European ano–, meaning...

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