umbral

[ˈʌmbrəl]

umbral Definition

• 1. the edge or threshold of a physiological or psychological response
• 2. the point at which a stimulus is just perceptible

Using umbral: Examples

Take a moment to familiarize yourself with how "umbral" can be used in various situations through the following examples!

• Example

  The umbral level of pain tolerance varies from person to person.

• Example

  The umbral stimulus for hearing is different for each individual.

umbral Synonyms and Antonyms

Synonyms for umbral

• threshold
• limit
• borderline
• perceptibility

Phrases with umbral

• umbral calculus

  a branch of mathematics that deals with the properties of sets and functions on the edge of their domains

  Example

  Umbral calculus is used in combinatorics and number theory.

• umbral moon

  a full moon that occurs at the moment of the moon's crossing of the ecliptic plane

  Example

  The umbral moon is a rare event that happens only a few times a year.

• umbral shadow

  the darkest part of a shadow, where the light source is completely blocked

  Example

  During a total solar eclipse, the umbral shadow of the moon falls on the Earth.

Origins of umbral

from Latin 'umbra', meaning 'shadow'

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Summary: umbral in Brief

'Umbral' [ˈʌmbrəl] refers to the edge or threshold of a physiological or psychological response, such as the umbral level of pain tolerance. It can also denote the point at which a stimulus is just perceptible, as in the umbral stimulus for hearing. 'Umbral' extends into phrases like 'umbral calculus,' a branch of mathematics that deals with the properties of sets and functions on the edge of their domains.