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entity go
that which is perceived or known or inferred to have its own distinct existence (living or nonliving)

abstraction, abstract entity go
a general concept formed by extracting common features from specific examples

psychological feature go
a feature of the mental life of a living organism

event go
something that happens at a given place and time

act, deed, human action, human activity go
something that people do or cause to happen

activity go
any specific behavior

process, procedure go
a particular course of action intended to achieve a result

diagnostic procedure, diagnostic technique go
a procedure followed in making a medical diagnosis

prenatal diagnosis
any of the diagnostic procedures used to determine whether a fetus has a genetic abnormality

noun.act

3 Subcategories

sonography, ultrasonography, echography, ultrasound go
using the reflections of high-frequency sound waves to construct an image of a body organ (a sonogram)
amniocentesis, amnio go
(pregnancy) extraction by centesis of amniotic fluid from a pregnant woman (after the 15th week of pregnancy) to aid in the diagnosis of fetal abnormalities
fetoscopy, foetoscopy go
prenatal diagnosis that allows direct observation of a fetus in the uterus and the withdrawal of fetal blood