Atrous

//ˈeɪtɹəs// adj

adj ·Rare ·Advanced level

Definitions

Adjective
  1. 1
    jet-black in color.

    "Male atrous leadcolourd^([sic]) on the upper side, under side a mixture of whitish and ferruginous with cuspidate fasciae ;"

  2. 2
    dilated (used when describing convolutions) https://arxiv.org/pdf/1606.00915.pdf not-comparable, uncommon

    "Atrous convolution allows us to explicitly control the resolution."

Example

More examples

"Male atrous leadcolourd^([sic]) on the upper side, under side a mixture of whitish and ferruginous with cuspidate fasciae ;"

Etymology

Etymology 1

From Latin āter (“dark, black”) + -ous.

Etymology 2

From French à trous (“with holes”).

Related phrases

jet black

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Data sourced from Wiktionary, WordNet, CMU, and other open linguistic databases. Updated March 2026.