thalli

Multiple Entries:
  thalli    thallus  

Concise Oxford English Dictionary © 2008 Oxford University Press:
thalli/ˈθalʌɪ/

plural form of thallus.

Concise Oxford English Dictionary © 2008 Oxford University Press:
thallus /ˈθaləs/

▶noun (pl. thalli /-lʌɪ, -liː/) Botany a plant body not differentiated into stem, leaves, and roots and without a vascular system, typical of algae, fungi, lichens, and some liverworts.

– derivatives
thalloid adjective.

– origin C19: from Gk thallos ‘green shoot’.