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long-acting

American  
[lawng-ak-ting, long-] / ˈlɔŋˈæk tɪŋ, ˈlɒŋ- /

adjective

Pharmacology.
  1. sustained-release.


long-acting British  

adjective

  1. (of a drug) slowly effective after initial dosage, but maintaining its effects over a long period of time, being slowly absorbed and persisting in the tissues before being excreted Compare intermediate-acting short-acting

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Etymology

Origin of long-acting

First recorded in 1950–55

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

Maternal vaccination during the third trimester of pregnancy and passive immunization of newborns using long-acting antibodies are being rolled out in many countries.

From Science Daily

Metsera’s obesity portfolio, which includes a long-acting injection that would require fewer shots than Lilly’s drugs, clearly has potential to compete in that category.

From The Wall Street Journal

The long-acting shot, given six times a year or every other month, is an alternative to taking daily pills to protect against the virus.

From BBC

A long-acting injection is to be offered for eligible children from this autumn.

From BBC

Other long-acting injectables that last 4 or even 6 months are now being tested.

From Science Magazine