As adjectives the difference between emersed and demersed
is that emersed is (botany|of an aquatic plant) that rises above the surface while demersed is situated or growing or constantly under water, as leaves; submersed.
emersed
English
Adjective
(
en adjective)
(botany, of an aquatic plant) That rises above the surface
Anagrams
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demersed
English
Adjective
(
-)
Situated or growing or constantly under water, as leaves; submersed.
(
Webster 1913)