noun ·Rare ·Advanced level

Definitions

Noun

1. 1
   A sponge contained within a pill on a fine string; once swallowed, the sponge is released and may be withdrawn, collecting cells (for analysis) on the way

Etymology

From cyto- + sponge.

Data sourced from Wiktionary, WordNet, CMU, and other open linguistic databases. Updated March 2026.