-idium

suffix

reproductive organs, gametes, and early life stages

“ctenidium, taenidium”

OriginAncient Greek -ίδιον →
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Meanings

suffix
  1. Forms names of body parts, mainly of invertebrate animals, fungi and plants.
    1. most commonreproductive organs, gametes, and early life stages

      basidium, spermidium, planidium, meconidium, glochidium

    2. sensory organs, mainly of arthropods

      scolopidium, ommatidium, (not arthropodan) sphaeridium

    3. various segments (arthropods) and functional processes

      stethidium, chilidium, limbidium, phyllidium, gonidium

    4. respiratory organs

      ctenidium, taenidium

  2. marginalcellular compartments

    chromidium, cytoophidium

Origin

  1. Ancient Greek-ίδιον“diminutive”
  2. English-idium

From Ancient Greek -ίδιον (-ídion, “diminutive”).

More words from Ancient Greek

Full word history & related roots →
Cite this entry
APA

-idium. (n.d.). In WatkinsX Dictionary. Retrieved November 2, 2026, from https://dictionary.watkinsx.com/word/-idium

MLA

“-idium.” WatkinsX Dictionary, https://dictionary.watkinsx.com/word/-idium. Accessed November 2, 2026.

Chicago

WatkinsX Dictionary, s.v. “-idium,” accessed November 2, 2026, https://dictionary.watkinsx.com/word/-idium.

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