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A ratchet (occasionally spelled rachet) is a mechanical device that allows continuous linear or rotary motion in only one direction while preventing motion in the opposite direction. Ratchets are widely used in machinery and tools. The word ratchet is also used informally to refer to a ratcheting socket wrench.
Ratcheting is a significant effect to be considered to check permanent deformation in systems which undergoes a cyclic loading. Common examples of such repetitive stresses include sea waves, road traffic, and earthquakes. [8]
This list contains Germanic elements of the English language which have a close corresponding Latinate form. The correspondence is semantic—in most cases these words are not cognates, but in some cases they are doublets, i.e., ultimately derived from the same root, generally Proto-Indo-European, as in cow and beef, both ultimately from PIE *gʷōus.
Ratchet (device), a mechanical device that allows movement in only one direction; Ratchet, metonymic name for a socket wrench incorporating a ratcheting device; Ratchet (instrument), a musical instrument and a warning device
Root Meaning in English Origin language Etymology (root origin) English examples cac-, kak-[1]bad: Greek: κακός (kakós), κάκιστος (kákistos): cachexia ...
Root Meaning in English Origin language Etymology (root origin) English examples nap-turnip: Latin: nāpus: napiform, neep nar-nostril: Latin: naris: internarial ...
Root Meaning in English Origin language Etymology (root origin) English examples galact-[1] (ΓΛΑΚ) [2]milk: Greek: γάλα, γάλακτος (gála, gálaktos): galactagogue, galactic, galactorrhea, lactose, polygala, polygalactia, galaxy
Root Meaning in English Origin language Etymology (root origin) English examples pac-peace: Latin: pax, pacis: appease, Pacific, pacify, pay pach-[1]thick: Greek: παχύς (pakhús), πάχος, πάχεος (pákhos, pákheos)