Etymograph

English

hexadeca-

Hexadeca- comes from Ancient Greek δεκάς ‘the number ten’, and goes back to Proto-Indo-European *déḱm̥.

  1. Proto-Indo-Europeanc. 4500–2500 BCE*déḱm̥‘ten’reconstructed
  2. Proto-Hellenicc. 2200–1600 BCE*dékə‘ten’reconstructed
  3. Ancient Greekc. 800–300 BCEδέκᾰdékă‘ten’
  4. Ancient Greek, derivedc. 800–300 BCEδεκάςdekás‘the number ten’
  5. Late Latinmoderndecas
  6. Englishtodayhexadeca-

attested reconstructed ? uncertain or disputed

Lineage

  1. Proto-Indo-Europeanc. 4500–2500 BCE*déḱm̥‘ten’reconstructed
  2. Proto-Hellenicc. 2200–1600 BCE*dékə‘ten’reconstructed
  3. Ancient Greekc. 800–300 BCEδέκᾰdékă‘ten’
  4. Ancient Greek, derivedc. 800–300 BCEδεκάςdekás‘the number ten’
  5. Late Latinmoderndecas
  6. Englishtodayhexadeca-

A compound of hexa- ‘six’ + deca- ‘ten’

Proto-Indo-European *swéḱs ‘six’

Proto-Hellenic *hwéks ‘six’

Ancient Greek ἕξ ‘six’

English hexa-

Proto-Indo-European *déḱm̥ ‘ten’

Proto-Hellenic *dékə ‘ten’

Ancient Greek δέκα ‘ten’

Ancient Greek δεκάς ‘a group of ten, decade’

Late Latin decas ‘(set of) ten’

English deca-

Linked words

through Proto-Indo-European *déḱm̥ ‘ten’

ten, century, cent, hundred, dick, dozen, dean, sen, den, diner, decimal, tenfold, hectare, denier, dwt, doyen, deni, 51 more

through Ancient Greek δεκάς ‘the number ten’

decade, deca, 5 more

Today it means

prefix sixteen

Language periods are conventional ranges, not dates for this word.

Etymograph / Proto-Indo-European *déḱm̥ / hexadeca-

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