ProphetesAI is thinking...
per-
MindMap
Loading...
Sources
per-
▪ I. per-, prefix1 The Latin preposition per (see prec.) used in composition with verbs, adjectives, and their derivatives. A large number of these have come down through Fr. into Eng.; others have been adopted directly from Lat., or formed in Eng. on Latin elements, or (as was frequent in 16–17th c...
Oxford English Dictionary
prophetes.ai
Per- - definition of per- by The Free Dictionary
per. (pɜr; unstressed pər) prep. 1. for or in each or every; a or an: Membership costs $10 per year. 2. according to; in accordance with: I delivered the box per your instructions. 3. by means of; by; through: Send it per messenger. adv. 4. Informal. each; for each one: The charge was five dollars per.
www.thefreedictionary.com
per- - Wiktionary, the free dictionary
Sep 17, 2023Prefix [ edit] per-. Used to make adjectives or verbs that are "very" something. magnus ("great, large") → permagnus ("very great, very large") multī ("many") → permultī ("very many") Used to form verbs that are intensive or completive, conveying the idea of doing something all the way through or entirely.
en.wiktionary.org
Per- | definition of per- by Medical dictionary
per-: word element [L.] 1. throughout; completely; extremely. 2. in chemistry, a large amount; combination of an element in its highest valence.
medical-dictionary.thefreedictionary.com
*per- | Etymology of root *per- by etymonline
*per-(5)Proto-Indo-European root meaning "to traffic in, to sell," an extended sense from root *per-(1) "forward, through" via the notion of "to hand over" or "distribute.". It forms all or part of: appraise; appreciate; depreciate; interpret; praise; precious; price; pornography. It is the hypothetical source of/evidence for its existence is provided by: Sanskrit aprata "without recompense ...
www.etymonline.com
Word Root: per- (Prefix) | Membean
The prefix per-, besides meaning "through," can also act as an intensive prefix, adding emphasis to a given word's root.An intensive prefix can be effectively translated as "thoroughly" or "very" to highlight its emphatic function. For instance, the prefix per-, such as in perfect, means to do something so "thoroughly" that nothing more can be done to it.
membean.com
Per- and Polyfluoroalkyl Substances (PFAS) | FDA
May 31, 2023Per- and polyfluoroalkyl substances (PFAS) are chemicals that resist grease, oil, water, and heat. They were first used in the 1940's and are now in hundreds of products including stain- and ...
www.fda.gov
Per- and Polyfluoroalkyl Substances (PFAS) | US EPA
Dec 14, 2023PFAS information from CDC's Agency for Toxic Substances and Disease Registry (ATSDR) Contact Us to ask a question, provide feedback, or report a problem. Last updated on December 14, 2023. Basic information about PFOA, PFOS and other PFAS/PFCs; how people are exposed; health effects; laws and regs that apply; and what EPA and states are doing ...
www.epa.gov
nomenclature - What is the meaning of the prefix "per-"? - Chemistry ...
1 Answer. Per- can mean a number of different things, depending on the context. It can mean that there is a peroxi bond (oxygen-oxygen bond) in the system, persulfate is a good example of this. More generally it tends to mean that the compound is the most completely altered product of a certain (possibly hypothetical) reaction.
chemistry.stackexchange.com
Per- and polyfluoroalkyl substances - Wikipedia
Per- and polyfluoroalkyl substances ( PFAS [1] or PFASs [2]) are a group of synthetic organofluorine chemical compounds that have multiple fluorine atoms attached to an alkyl chain. An early definition, from 2011, required that they contain at least one perfluoroalkyl moiety, -C n F 2n+1 -. [3] [4] Beginning in 2021, the Organisation for ...
en.wikipedia.org
per- | Etymology of prefix per- by etymonline
per-word-forming element common in words of French and Latin origin, meaning primarily "through," thus also "throughout; thoroughly; entirely, utterly," from Latin preposition per (see per (prep.)).
www.etymonline.com
Word Root: per- (Prefix) | Membean
Prefixes are key morphemes in English vocabulary that begin words. The English prefix per-, which means "through," appears in hundreds of English vocabulary words, such as perish and person.You can remember that the prefix per-means "through" via the word permanent, for something that is permanent stays intact "through" the years.
membean.com
Per- and Polyfluoroalkyl Substances (PFAS) | US EPA
4 days agoOn March 14, 2023, EPA announced the proposed National Primary Drinking Water Regulation (NPDWR) for six PFAS including perfluorooctanoic acid (PFOA), perfluorooctane sulfonic acid (PFOS), perfluorononanoic acid (PFNA), hexafluoropropylene oxide dimer acid (HFPO-DA, commonly known as GenX Chemicals), perfluorohexane sulfonic acid (PFHxS), and ...
www.epa.gov
巧说词根词缀之per-从始至终 - 百家号
巧说词根词缀之per-从始至终. 今天给大家介绍的是一个常见的前缀"per-"。. 在90%以上的情况下它都表示"through，throughout，thoroughly"，贯穿，自始至终，彻底的，完全的，是一个加强型的前缀。. 当然它还有一些极少数表示其他意思的情况，一会儿我们也会 ...
baijiahao.baidu.com
Per- And Polyfluoroalkyl Substances (PFAS) - NYDEC
Per- and Polyfluoroalkyl Substances (PFAS) are a group of chemicals used to make fluoropolymer coatings and products that resist heat, oil, stains, grease, and water. Fluoropolymer coatings are blends of resins and lubricants used in products such as water-repellent clothing, furniture, adhesives, paint and varnish, food packaging, heat ...
dec.ny.gov