n.
Pronunciation: ˌ fi-l ə - ' tak-s ə s
Variant: also phyl · lo · taxy \ ' fi-l ə - ˌ tak-s ē \
Function: noun
Etymology: New Latin phyllotaxis, from phyll- + -taxis
Date: 1857
1 : the arrangement of leaves on a stem and in relation to one another
2 : the study of phyllotaxis and of the laws that govern it