Skip to Content


Pronunciation: tha-lof'i-ta

Definition: In older classification systems, a primary division of the plant kingdom the members of which, with a few exceptions, were devoid of true roots, stems, and leaves; it included bacteria, fungi, and algae.

[G. thallos, a green shoot, + phyton, plant]

Further information

Always consult your healthcare provider to ensure the information displayed on this page applies to your personal circumstances.

© Copyright 2018 Wolters Kluwer. All Rights Reserved. Review date: Sep 19, 2016.