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The general structure of a hemiacetal (left) and hemiketal (right). In organic chemistry, a hemiacetal is a functional group the general formula R 1 R 2 C(OH)OR, where R 1, R 2 is a hydrogen atom or an organic substituent.
A hemispherical head ("hemi-head") gives an efficient combustion chamber with minimal heat loss to the head, and allows for two large valves.However, a hemi-head usually allows no more than two valves per cylinder due to the difficulty in arranging the valve gear for four valves at diverging angles, and these large valves are necessarily heavier than those in a multi-valve engine of similar ...
Example(s) -iasis: condition, formation, or presence of Latin -iasis, pathological condition or process; from Greek ἴασις (íasis), cure, repair, mend mydriasis: iatr(o)-of or pertaining to medicine or a physician (uncommon as a prefix but common as a suffix; see -iatry) Greek ἰατρός (iatrós), healer, physician iatrochemistry ...
The 426 Hemi, in "Street Hemi" form, was produced for use in limited Plymouth and Dodge automobiles from 1966 through 1971, which have become collector's items. For example, a 1971 Plymouth Barracuda Convertible equipped with the 426 Hemi engine sold at auction for US$3.5 million in 2014. [21] 426 Hemi engine in a 1966 Charger
These "hemi" faces lie parallel to the faces of some other symmetrical polyhedron, and their count is half the number of faces of that other polyhedron – hence the "hemi" prefix. [1] The prefix "hemi" is also used to refer to certain projective polyhedra, such as the hemi-cube, which are the image of a 2 to 1 map of a spherical polyhedron ...
Homonymous hemianopsia; Paris as seen with left homonymous hemianopsia: Specialty: Ophthalmology : Symptoms: Clumsiness, decreased night visions, difficulty of straight line walking, distorted sight, doubled vision, frequent turning of the head away from the side where it’s present, lack of awareness where it’s present, visual hallucinations
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The English language uses many Greek and Latin roots, stems, and prefixes. These roots are listed alphabetically on three pages: Greek and Latin roots from A to G; Greek and Latin roots from H to O; Greek and Latin roots from P to Z. Some of those used in medicine and medical technology are listed in the List of medical roots, suffixes and ...