Etymograph

English

acicular

Acicular comes from Latin aciculāris ‘slender, as a needle’, from acicula ‘small pin’, and ultimately from Proto-Indo-European *h₂eḱ- ‘sharp’.

  1. Proto-Indo-Europeanc. 4500–2500 BCE*h₂eḱ-1‘sharp’reconstructed
  2. Proto-Indo-Europeanc. 4500–2500 BCE*h₂eḱus1‘pointed’reconstructed
  3. Latinc. 75 BCE–200 CEacus2‘needle’
  4. Latinc. 75 BCE–200 CEacicula3‘small pin’
  5. Latinc. 75 BCE–200 CEaciculāris4‘slender, as a needle’
  6. Englishearliest quotation 1860acicular4

attested reconstructed ? uncertain or disputed deepest recorded ancestor

  1. 1 Wiktionary, Latin acus
  2. 2 Wiktionary, Latin acicula
  3. 3 Wiktionary, Latin acicularis
  4. 4 Wiktionary, English acicular
  5. Earliest quotation in Wiktionary’s entry: 1860, John Ruskin, London: Smith: “[…] though fond of foliage, their trees always had…”.

Lineage

  1. Proto-Indo-Europeanc. 4500–2500 BCE*h₂eḱ-Wiktionary, Latin acus‘sharp’reconstructed
  2. Proto-Indo-Europeanc. 4500–2500 BCE*h₂eḱusWiktionary, Latin acus‘pointed’reconstructed
  3. Latinc. 75 BCE–200 CEacusWiktionary, Latin acicula‘needle’
  4. Latinc. 75 BCE–200 CEaciculaWiktionary, Latin acicularis‘small pin’
  5. Latinc. 75 BCE–200 CEaciculārisWiktionary, English acicular‘slender, as a needle’
  6. Englishearliest quotation 1860acicularWiktionary, English acicular. Earliest quotation in Wiktionary’s entry: 1860, John Ruskin, London: Smith: “[…] though fond of foliage, their trees always had…”

Linked words

through Proto-Indo-European *h₂eḱ- ‘sharp’

hear, edge, egg, ear, hammer, eager, acid, axe, oxide, mediocre, vinegar, acne, mediocrity, acetate, paragon, exacerbate, acme, acacia, hark, acumen, acuity, acyl, roselle, rosacea, acrimony, acrid, exacerbation, acerbic, 71 more

through Latin acus ‘needle’

acute, acupuncture, 17 more

Today it means

adj Needle-shaped; slender like a needle or bristle.

Sources

Sources: Wiktionary, “acicular”; the older steps come from the Wiktionary entries for Latin acus, Latin acicula, Latin acicularis. 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 *h₂eḱ- / acicular

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