[a. L. cistula dim. of cista box, basket.]
† 1. gen. A little cist. Obs.
1699. Phil. Trans., XXI. 61. The Eggs of some Fish, which produces or breeds them in a little Cistula or Bag.
2. in Catoptrics (see quot.).
1751. Chambers, Cycl., Catoptric Cistula, a machine, or apparatus, whereby little bodies are represented extremely large; and near ones extremely wide by means of mirrours, disposed in the concavity of a kind of chest.
3. Bot. The small cup-shaped conceptacle of certain lichens. (Syd. Soc. Lex.)