-ad

suffix

A unit or set (especially of a specified number).

“tibiad; ulnad”

OriginAncient Greek -άς →
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Meanings

-ad1

suffix-ad (noun-forming suffix, plural -ads)

plural -ads

  1. A unit or set (especially of a specified number).

    chiliad, duodecad

-ad2

suffix-ad (adverb-forming suffix, comparative more -ad, superlative most -ad)

comparative more -ad · superlative most -ad

  1. anatomytoward

    tibiad; ulnad

Origin

-ad · suffix

  1. Ancient Greek-άς
  2. English-ad

From Ancient Greek -άς (-ás) (genitive -άδος (-ádos)): a suffix forming feminine nouns.

More words from Ancient Greek

Full word history & related roots →

-ad · suffix

  1. Latinad
  2. Latinad
  3. English-ad

Derived from Latin ad (“at”), from Proto-Italic *ad, from Proto-Indo-European *h₂éd. Coined by British anatomist John Barclay.

More words from Latin

Full word history & related roots →
Cite this entry
APA

-ad. (n.d.). In WatkinsX Dictionary. Retrieved November 3, 2026, from https://dictionary.watkinsx.com/word/-ad

MLA

“-ad.” WatkinsX Dictionary, https://dictionary.watkinsx.com/word/-ad. Accessed November 3, 2026.

Chicago

WatkinsX Dictionary, s.v. “-ad,” accessed November 3, 2026, https://dictionary.watkinsx.com/word/-ad.

Source: -ad on Wiktionary, CC BY-SA 4.0.