AIR CHANGES PER HOUR (ACH)

Meaning of AIR CHANGES PER HOUR (ACH) in English

Air Changes Per Hour

The movement of a volume of air in a given period of time; if a house has one air change per hour, it means that the air in the house will be replaced in a one-hour period.

Environmental engineering English vocabulary. Английский словарь экологического инжиниринга. 2012

ACH — Airport Name : St. Gallen Altenrhein Airport Airport Location : Altenrhein, Switzerland IATA Code : ACH ICAO Code : LSZR
Airport Code English Dictionary
PER — prep 1. through (= from one side to the other of); also: during, throughout; 2. by (= by the agency …
Interlingua English vocab
PER — I. R _pər, |pər, +V |pər.; - R _pə(r, |pə̄, +V |pər. or |pə̄ also |pə̄r preposition Etymology: Latin, through, …
Webster's New International English Dictionary
AIR — I. ˈār variant of ere I II. adjective ( -er/-est ) Etymology: Middle English (northern dialect) ar, are, from ar, …
Webster's New International English Dictionary
PER- — prefix Etymology: in sense 1, from Latin, throughout, thoroughly, completely, deviating from (also, used as verbal prefix with the meanings …
Webster's New International English Dictionary
HOUR
Webster's New International English Dictionary
CHANGES — present third singular of change plural of change
Webster's New International English Dictionary
PER — (prep.) Through; by means of; through the agency of; by; for; for each; as, per annum; per capita, by heads, …
Английский словарь Webster
ACH — (n.) Alt. of Ache
Английский словарь Webster
PER — ( prep. ) Through; by means of; through the agency of; by; for; for each; as, per annum; per capita, …
Webster's Revised Unabridged English Dictionary
ACH — ( n. ) Alt. of Ache
Webster's Revised Unabridged English Dictionary
PER — /perr/ ; unstressed /peuhr/ , prep. 1. for each; for every: Membership costs ten dollars per year. This cloth is …
Random House Webster's Unabridged English Dictionary
HOUR — — hourless , adj. /oweur, ow"euhr/ , n. 1. a period of time equal to one twenty-fourth of a mean …
Random House Webster's Unabridged English Dictionary
AIR — air 1 — airlike , adj. /air/ , n. 1. a mixture of nitrogen, oxygen, and minute amounts of other …
Random House Webster's Unabridged English Dictionary
ACH — Biochem. acetylcholine.
Random House Webster's Unabridged English Dictionary
ACH — automated clearinghouse.
Random House Webster's Unabridged English Dictionary
ACH — /ahkh/ , interj. German. alas; oh.
Random House Webster's Unabridged English Dictionary
PER — I. ˈpər preposition Etymology: Latin, through, by means of, by — more at for Date: 14th century 1. : by …
Merriam-Webster's Collegiate English vocabulary
AIR — I. ˈer noun Usage: often attributive Etymology: Middle English, from Anglo-French, from Latin aer, from Greek aēr Date: 14th century …
Merriam-Webster's Collegiate English vocabulary
HOUR — noun Etymology: Middle English, from Anglo-French ure, eure, from Late Latin & Latin; Late Latin hora canonical hour, from Latin, …
Merriam-Webster's Collegiate English vocabulary
PER — prep through; by means of; through the agency of; by; for; for each; as, per annum; per capita, by heads, …
Webster English vocab
HOUR — noun a measure of distance traveled. 2. hour ·noun the twenty-fourth part of a day; sixty minutes. 3. hour ·noun …
Webster English vocab
AIR — noun intelligence; information. 2. air ·noun odoriferous or contaminated air. 3. air ·noun utterance abroad; publicity; vent. 4. air ·noun …
Webster English vocab
ACH — noun ·alt. of ache.
Webster English vocab
HOUR — [hour] n [ME, fr. OF heure, fr. LL & L; LL hora canonical hour, fr. L, hour of the day, …
Merriam-Webster English vocab
HOUR — in timekeeping, 3,600 seconds, now defined in terms of radiation emitted from atoms of the element cesium under specified conditions. …
Britannica English vocabulary
ACH — ach BrE AmE ɑːx æx —German [ ʔax ]
Longman Pronunciation English Dictionary
PER — / pə(r); NAmE ; strong form pɜː(r)/ preposition used to express the cost or amount of sth for each person, …
Oxford Advanced Learner's English Dictionary
HOUR — / ˈaʊə(r); NAmE / noun HELP NOTE : Use an , not a , before hour . 1. [ C …
Oxford Advanced Learner's English Dictionary
AIR — / eə(r); NAmE er/ noun , verb ■ noun GAS 1. [ U ] the mixture of gases that surrounds …
Oxford Advanced Learner's English Dictionary
ACH — / ɑːx; NAmE / exclamation ( ScotE ) used to express the fact that you are surprised, sorry, etc. •• …
Oxford Advanced Learner's English Dictionary
PER — per S3 W1 /pə; strong pɜː $ pər strong pɜːr/ BrE AmE preposition [ Date: 1300-1400 ; Language: Latin ; …
Longman Dictionary of Contemporary English
HOUR — hour S1 W1 /aʊə $ aʊr/ BrE AmE noun [countable] [ Date: 1100-1200 ; Language: Old French ; Origin: heure …
Longman Dictionary of Contemporary English
AIR — I. air 1 S1 W1 /eə $ er/ BrE AmE noun [ Sense 1-7, 9: Date: 1200-1300 ; Language: Old …
Longman Dictionary of Contemporary English
PER — prep. 1 for each; for every (two sweets per child; five miles per hour). 2 by means of; by; through …
Английский основной разговорный словарь
HOUR — n. 1 a twenty-fourth part of a day and night, 60 minutes. 2 a time of day, a point in …
Английский основной разговорный словарь
AIR — n. & v. --n. 1 an invisible gaseous substance surrounding the earth, a mixture mainly of oxygen and nitrogen. 2 …
Английский основной разговорный словарь
PER — prep. 1 for each; for every (two sweets per child; five miles per hour). 2 by means of; by; through …
Concise Oxford English Dictionary
HOUR — n. 1 a twenty-fourth part of a day and night, 60 minutes. 2 a time of day, a point in …
Concise Oxford English Dictionary
AIR — n. & v. n. 1 an invisible gaseous substance surrounding the earth, a mixture mainly of oxygen and nitrogen. 2 …
Concise Oxford English Dictionary
PER — prep. 1. for each; for every (two sweets per child; five miles per hour). 2 by means of; by; through …
Oxford English vocab
HOUR — n.1 a twenty-fourth part of a day and night, 60 minutes. 2 a time of day, a point in time …
Oxford English vocab
AIR — n. & v. --n. 1. an invisible gaseous substance surrounding the earth, a mixture mainly of oxygen and nitrogen. 2 …
Oxford English vocab
PER — Frequency: The word is one of the 1500 most common words in English. 1. You use per to express rates …
Collins COBUILD Advanced Learner's English Dictionary
HOUR — ( hours) Frequency: The word is one of the 700 most common words in English. 1. An hour is a …
Collins COBUILD Advanced Learner's English Dictionary
AIR — ( airs, airing, aired) Frequency: The word is one of the 700 most common words in English. 1. Air is …
Collins COBUILD Advanced Learner's English Dictionary
PER — preposition COLLOCATIONS FROM OTHER ENTRIES $15/5 grams/50 etc per day (= used when saying how much someone earns or is …
Longman DOCE5 Extras English vocabulary
HOUR — noun COLLOCATIONS FROM OTHER ENTRIES 24 hours a day (= during the whole day and night ) ▪ In Cairo, …
Longman DOCE5 Extras English vocabulary
AIR — I. noun COLLOCATIONS FROM OTHER ENTRIES a road/rail/air crash ▪ There will be an investigation into the cause of the …
Longman DOCE5 Extras English vocabulary
HOUR — [noun] [C] - a period of 60 minutesThe exam lasted an hour/three hours/half an hour/a quarter of an hour/an hour …
Cambridge English vocab
PER — prep. per capita per caput per contra per se
Collegiate Thesaurus English vocab
PER — I. per preposition Synonyms: via 2, by, by dint of, by means of, by virtue of, by way of, through, …
Collegiate Thesaurus English vocabulary
HOUR — noun 1 period of sixty minutes ADJECTIVE ▪ full , solid ▪ I slept for eight solid ~s. ▪ contact …
Oxford Collocations English Dictionary
CHANGES — • ↑ make changes
Longman Activator English vocab
AIR — INDEX: 1. the air that we breathe 2. when there is not enough fresh air 3. to let fresh air …
Longman Activator English vocab
CHANGES — ➡ bells and bell-ringing
Oxford Guide to British and American Culture English vocabulary
ACH — Automated Clearing House
Computer Abbreviations English vocabulary
ACH — Automated Clearing House
Computer Acronyms English vocab
ACH — See automated clearing house (ACH)
European Central Bank English Glossary
PER — предл. 1) по, посредством, через Syn : by means, by dint 2) согласно as per usual шутл. ≈ по обыкновению …
Большой Англо-Русский словарь
HOUR — сущ. 1) час to show, tell the hour ≈ показывать время a solid hour ≈ целый час an ungodly hour …
Большой Англо-Русский словарь
CHANGES — Изменения(замены) changes: ~ in post-giro accounts изменения в системе почтовых жиросчетов changes: ~ in post-giro accounts изменения в системе почтовых …
Большой Англо-Русский словарь
AIR — 1. сущ. 1) воздух; атмосфера to clear the air ≈ очищать атмосферу to breathe air, inhale air ≈ вдыхать кислород …
Большой Англо-Русский словарь
ACH — сокр. от Automated Clearinghouse
Большой Англо-Русский словарь

Environmental Engineering English vocabulary

← AIR BASIN AIR CLEANING→