Triadelphous is a derived term of adelphy.
In botany|lang=en terms the difference between triadelphous and adelphy
is that triadelphous is (botany) having its stamens fused together at least partly by the filaments so that they form three separate groups, some of which may contain a lone stamen while adelphy is (botany) fusion of stamen filaments.
As an adjective triadelphous
is (botany) having its stamens fused together at least partly by the filaments so that they form three separate groups, some of which may contain a lone stamen.
As a noun adelphy is
(botany) fusion of stamen filaments.
triadelphous
English
Adjective
(-)
(botany) Having its stamens fused together at least partly by the filaments so that they form three separate groups, some of which may contain a lone stamen.
Usage notes
*Said of either a flower of a plants bearing such flowers.
adelphy
English
Noun
(-)
(botany) Fusion of stamen filaments.
Usage notes
* Above five groups of fused stamens, (term) is preceded with the numeral.
Derived terms
* monadelphy, monadelphous
* diadelphy, diadelphous
* triadelphy, triadelphous
* tetradelphy, tetradelphous
* pentadelphy, pentadelphous
* polyadelphy, polyadelphous