Organism, Sometimes Harmful, Living Inside Another
This page is the CodyCross answer for the clue below from Greece, Group 665, Puzzle 4 (Historical Monuments).
Question
Organism, Sometimes Harmful, Living Inside Another
Answer
PARASITE
Word Meaning:
PARASITE — (biology) An organism that lives on or in another organism of a different species, deriving benefit from living on or in that other organism, while not contributing towards that other organism sufficiently to cover the cost to that other organism.
Definitions from Wiktionary.