Multiple choice

Directions: Study the following words:

Dehydrate, Hydrant, Hydraulics, Hydrogen

What does the common part “hydr” mean?

  1. Water

  2. Liquid

  3. Solid

  4. Gaseous

Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

All four words contain the root hydr-: Dehydrate (remove water), Hydrant (water pipe), Hydraulics (water-based systems), Hydrogen (water-forming element). The common meaning is water.