n.
Pronunciation: ' tha-l ə s
Function: noun
Inflected Form: plural thal · li \ ' tha- ˌ l ī , - ˌ l ē \ or thal · lus · es
Etymology: New Latin, from Greek thallos, from thallein to sprout; akin to Armenian dalar green, fresh, Albanian dal I come forth
Date: 1829
: a plant body that lacks differentiation into distinct members (as stem, leaves, and roots), does not grow from an apical point, and is characteristic of organisms formerly classified as thallophytes