13-Letter Words Starting With H

Here's the list of all the 564 13-Letter Words Starting With H in the English Language.

The list is arranged by the word lengths. Click on the length below to jump to the relevant section of the page.

Common Words (with Definitions and Examples)
homosexuality
1. a sexual attraction to (or sexual relations with) persons of the same sex
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heterogeneous
1. consisting of elements that are not of the same kind or nature
2. originating outside the body
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hydrochloride
1. a complex consisting of an organic base in association with hydrogen chloride
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hybridization
1. (genetics) the act of mixing different species or varieties of animals or plants and thus to produce hybrids
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horticultural
1. of or relating to the cultivation of plants
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heterogeneity
1. the quality of being diverse and not comparable in kind
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hyperactivity
1. a condition characterized by excessive restlessness and movement
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hydroelectric
1. of or relating to or used in the production of electricity by waterpower
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harmonization
1. a piece of harmonized music
2. singing in harmony
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hematopoietic
1. pertaining to the formation of blood or blood cells
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harmonisation
1. a piece of harmonized music
2. singing in harmony
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heartbreaking
1. causing or marked by grief or anguish
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hermaphrodite
1. one having both male and female sexual characteristics and organs; at birth an unambiguous assignment of male or female cannot be made
2. of animal or plant; having both male female reproductive organs
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hydrocephalus
1. an abnormal condition in which cerebrospinal fluid collects in the ventricles of the brain; in infants it can cause abnormally rapid growth of the head and bulging fontanelles and a small face; in adults the symptoms are primarily neurological
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hydrodynamics
1. study of fluids in motion
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hallucination
1. illusory perception; a common symptom of severe mental disorder
2. a mistaken or unfounded opinion or idea
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hyperglycemia
1. abnormally high blood sugar usually associated with diabetes
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hydrogenation
1. a chemical process that adds hydrogen atoms to an unsaturated oil
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housebreaking
1. trespassing for an unlawful purpose; illegal entrance into premises with criminal intent
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hybridisation
1. (genetics) the act of mixing different species or varieties of animals or plants and thus to produce hybrids
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hematological
1. of or relating to or involved in hematology
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hydraulically
1. in a hydraulic manner
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housecleaning
1. (figurative) the act of reforming by the removal of unwanted personnel or practices or conditions
2. the act of cleaning the rooms and furnishings of a house
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hypercalcemia
1. the presence of abnormally high levels of calcium in the blood; usually the result of excessive bone resorption in hyperparathyroidism or Paget's disease
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hemispherical
1. of or relating to or being a hemisphere
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13-Letter Words Starting With H