Etymograph

English

pinacoderm

Pinacoderm comes from Ancient Greek πίναξ ‘tablet, dish, plank’.

  1. Ancient Greekc. 800–300 BCEπίναξpínax‘tablet, dish, plank’
  2. Englishtodaypinacoderm

attested reconstructed ? uncertain or disputed

Lineage

  1. Ancient Greekc. 800–300 BCEπίναξpínax‘tablet, dish, plank’
  2. Englishtodaypinacoderm

Formed from -derm

Today it means

noun The outermost layer of cells (pinacocytes) in the phylum Porifera (sponges), equivalent to the epidermis, and characterized as an epithelial layer of flattened cells.

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

Etymograph / Ancient Greek πίναξ / pinacoderm