-idium

Suffix

1. Forms names of body parts, mainly of invertebrate animals, fungi and plants.
   • basidium, spermidium, planidium, meconidium, glochidium

   1. (most common) reproductive organs, gametes, and early life stages

   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. cellular compartments
   • chromidium, cytoophidium