- denoting or relating to the uppermost part of a sea or lake down to about 100 metres depth, which receives enough light to enable photosynthesis to take place
Collins Concise English Dictionary © HarperCollins Publishers::
euphotic /juːˈfəʊtɪk; -ˈfɒt-/ adj
'euphotic' also found in these entries (note: many are not synonyms or translations):