Etymograph

English

dedendum

Dedendum comes from Latin dēdō ‘to hand over, surrender, give up, consign,…’, from Proto-Indo-European *dédeh₃ti ‘to be giving’, and ultimately from *deh₃- ‘give’.

  1. Proto-Indo-Europeanc. 4500–2500 BCE*deh₃-1‘give’reconstructed
  2. Proto-Indo-Europeanc. 4500–2500 BCE*dédeh₃ti1‘to be giving’reconstructed
  3. Proto-Italicc. 1500–700 BCE*didō1‘to give’reconstructed
  4. Latinc. 75 BCE–200 CEdō2‘to give’
  5. Latinc. 75 BCE–200 CEdēdō3as dedere‘to hand over, surrender, give up, consign, deliver, yield, abandon’
  6. Englishtodaydedendum3

attested reconstructed ? uncertain or disputed deepest recorded ancestor

  1. 1 Wiktionary, Latin do
  2. 2 Wiktionary, Latin dedo
  3. 3 Wiktionary, English dedendum

Lineage

  1. Proto-Indo-Europeanc. 4500–2500 BCE*deh₃-Wiktionary, Latin do‘give’reconstructed
  2. Proto-Indo-Europeanc. 4500–2500 BCE*dédeh₃tiWiktionary, Latin do‘to be giving’reconstructed
  3. Proto-Italicc. 1500–700 BCE*didōWiktionary, Latin do‘to give’reconstructed
  4. Latinc. 75 BCE–200 CEdōWiktionary, Latin dedo‘to give’
  5. Latinc. 75 BCE–200 CEdēdōWiktionary, English dedendumas dedere‘to hand over, surrender, give up, consign, deliver, yield, abandon’
  6. EnglishtodaydedendumWiktionary, English dedendum

Linked words

through Proto-Indo-European *deh₃- ‘give’

date, add, addition, delicious, donate, donation, donor, dow, vendor, additive, dowry, rendition, condone, dowager, perdition, dower, dati, sconce, addendum, endow, 37 more

through Proto-Indo-European *dédeh₃ti ‘to be giving’

dose, antidote, anecdote, dacha, 17 more

through Proto-Italic *didō ‘to give’

dative, venta, 14 more

through Latin dō ‘to give’

data, die, tradition, rent, treason, surrender, vent, render, rendezvous, 15 more

Today it means

noun The difference between the radius of the pitch circle of a gear and its root circle.

Sources

Sources: Wiktionary, “dedendum”; the older steps come from the Wiktionary entries for Latin do, Latin dedo. By Wiktionary contributors, CC BY-SA 4.0, via kaikki.org (dump of Oct 3 2026); text adapted and restructured. Language periods are conventional ranges, not dates for this word. License.

Etymograph / Proto-Indo-European *deh₃- / dedendum

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