To Add Emphasis to a Syllable

This page is the CodyCross answer for the clue below from Fauna and Flora, Group 174, Puzzle 5 (Heterotroph and Autotroph).

Question is: To Add Emphasis to a Syllable

and the answer is: STRESS

Word Meaning:

STRESS — (biology) A physical, chemical, infective agent aggressing an organism.

Definitions from Wiktionary.

To add emphasis to a syllable — CodyCross Answer | CodyCross Solutions