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hydrolysis
Chemical breakdown by water reaction.
hydrophobic
Repellent to water; does not mix with water.
hydropower
Electricity generated from flowing water.
hydrothermal
Relating to hot water, often in geology.
hydroxide
a compound containing an ion of oxygen and hydrogen
hydroxy
containing an oxygen atom bound to a hydrogen atom.
hydroxyl
A chemical group containing oxygen and hydrogen.
hye
To go quickly or in a hurry.
hyena
A wild animal known for its laughter-like sound.
hygiene
Practices to maintain health and cleanliness.
hygienic
Clean and promoting good health.
hygienist
a dental professional who cleans teeth
hymen
a thin membrane partly covering the vaginal opening.
hymn
A song of praise or worship.
hype
exaggerated publicity or promotion
hyper
Excessively excited or energetic.
hyperactive
Excessively active or energetic.
hyperactivity
Excessive movement or energy levels.
hyperbole
Exaggerated statements not meant to be taken literally.
hyperbolic
highly exaggerated and not meant to be taken literally
hyperinflation
An extremely rapid increase in prices.
Hyperion
a moon of Saturn known for its shape
hypersensitivity
An extreme physical or emotional reaction to things.
hyperspace
A concept of faster-than-light travel.