in vitro
adverb or adjective
in vi·tro
in-ˈvē-(ˌ)trō 
-ˈvi-
-ˈvi-
-ˈwē-
: outside the living body and in an artificial environment
Examples of in vitro in a Sentence
Recent Examples on the Web
What Research Actually Shows About Cloves Most existing research has been conducted on animals or in vitro with high concentrations of cloves, not with clove water or the whole spice.
—
Caitlin Pagán, Verywell Health, 26 Aug. 2025
Davis points out that most of the evidence surrounding immunity and digestion benefits has only been found in in vitro (testing cells or other biological matter in a lab, outside of a human body) or animal studies, not on humans.
—Hannah Yasharoff, USA Today, 20 Aug. 2025
The researchers used a mouse model with in vitro fertilization (IVF) and embryo transfer to separate the two time periods, pre-pregnancy and gestation.
—New Atlas, 16 Aug. 2025
The resulting footage, which shows how embryos push and pull to anchor themselves in the uterus in vivid detail, could lead to improvements for in vitro fertilization (IVF) techniques, the scientists say.
—Humberto Basilio, Scientific American, 15 Aug. 2025
See All Example Sentences for in vitro
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Caitlin Pagán, Verywell Health, 26 Aug. 2025
Davis points out that most of the evidence surrounding immunity and digestion benefits has only been found in in vitro (testing cells or other biological matter in a lab, outside of a human body) or animal studies, not on humans.
—Hannah Yasharoff, USA Today, 20 Aug. 2025
The researchers used a mouse model with in vitro fertilization (IVF) and embryo transfer to separate the two time periods, pre-pregnancy and gestation.
—New Atlas, 16 Aug. 2025
The resulting footage, which shows how embryos push and pull to anchor themselves in the uterus in vivid detail, could lead to improvements for in vitro fertilization (IVF) techniques, the scientists say.
—Humberto Basilio, Scientific American, 15 Aug. 2025
See All Example Sentences for in vitro
Cite this Entry
“In vitro.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/in%20vitro. Accessed 10 Sep. 2025.
Copy CitationKids Definition
in vitro
adverb or adjective
in vi·tro
in-ˈvē-(ˌ)trō
: outside the living body and in an artificial environment
an egg fertilized in vitro
Etymology
Latin, literally, "in glass"
Medical Definition
in vitro
adverb or adjective
in vi·tro
in-ˈvē-(ˌ)trō
-ˈvi-
-ˈvi-
: outside the living body and in an artificial environment
growth of cells in vitro
in vitro studies
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