As nouns the difference between directional and haptotaxis
is that directional is something that indicates direction, such as a vehicle's turn signal while haptotaxis is (biology) the directional motility of cells, usually in a biochemical gradient.
As an adjective directional
is indicating direction.
directional
English
Adjective
(
en adjective)
Indicating direction.
Of or relating to guidance or help.
Noun
(
en noun)
Something that indicates direction, such as a vehicle's turn signal.
Derived terms
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See also
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