UNDETECTABLE

Pronunciation (US):

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IPA (US):

 Dictionary entry overview: What does undetectable mean? 

• UNDETECTABLE (adjective)
  The adjective UNDETECTABLE has 2 senses:

1. not easily seen

2. barely able to be perceived

  Familiarity information: UNDETECTABLE used as an adjective is rare.

 Dictionary entry details 

• UNDETECTABLE (adjective)

Sense 1

Meaning:

Not easily seen

Similar:

invisible; unseeable (impossible or nearly impossible to see; imperceptible by the eye)

Sense 2

Meaning:

Barely able to be perceived

Synonyms:

indiscernible; insensible; undetectable

Context example:

an almost insensible change

Similar:

imperceptible; unperceivable (impossible or difficult to perceive by the mind or senses)

 Context examples 

By day six the chloroform was almost undetectable.

(Common Houseplant with Genetic Modification Can Remove Polluted Air, The Titi Tudorancea Bulletin)

The primary tumor is undetectable radiographically or during bronchoscopy; therefore, it can not be assessed.

(Occult Adenosquamous Lung Carcinoma, NCI Thesaurus)

This agent reacts to most human adenocarcinomas (colorectal, gastric, pancreatic, ovarian, endometrial, mammary) but has weak or undetectable reactivity to most normal tissues.

(Chimeric Monoclonal Antibody B72.3, NCI Thesaurus)

A baseline fetal heart rate with a detectable amplitude range that is greater than undetectable but less than or equal to five beats per minute.

(Minimal Baseline Fetal Heart Rate Variability, NCI Thesaurus)

AFP levels are usually undetectable in the blood of healthy adult men or women (who are not pregnant).

(AFP, NCI Dictionary)

A baseline fetal heart rate with an undetectable amplitude range.

(Absent Fetal Heart Rate Variability, NCI Thesaurus)

Apart from microcephaly, babies that have been exposed to the Zika virus may develop brain lesions that are initially undetectable but could trigger cognitive impairment.

(New blood test to detect Zika approved in Brazil, SciDev.Net)

The authors believe that other molecules, including nitrogen and methane, may be present but they remain undetectable with current observations.

(Hubble Finds Water Vapor on Habitable-Zone Exoplanet for 1st Time, NASA)

The team found extremely slow rates of respiration and approximately 1,000 cells per cubic centimeter of subseafloor sediment in the South Pacific gyre—rates and quantities that had been nearly undetectable.

(No limit to life in deep sediment of ocean's "deadest" region, NSF)

This agent exerts its anti-inflammatory effect by preventing conversion of arachidonic acid to prostaglandins at inflammation site mediated through inhibition of COX-2, which is undetectable in most tissues but is up-regulated at the inflammation sites.

(Ketorolac Tromethamine, NCI Thesaurus)