LINK / CITE ADD TO WORD LIST. adjective. The definition of harmful is something that causes damage or is able to be hurtful. A chemical that causes you to become sick is an example of a chemical that would be described as harmful. causing or able to cause harm; hurtful. adjective.
The most common way to become infected with giardia is after swallowing contaminated water. Giardia parasites are found in lakes, ponds, rivers and streams worldwide, as well as in municipal water supplies, wells, cisterns, swimming pools, water parks and spas. Ground and surface water can become contaminated from agricultural runoff, wastewater discharge or animal feces.
Hadrias was a town in Italy from which the sea of Adria gets its name. This sea stretches between Greece and Italy. Paul journeyed in the sea of Adrias on his way to Rome as a prisoner. The ship in which he was travelling, was caught in a storm in the Adriatic sea, and shipwrecked off the island of Melita.