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Glossary of Reproduction - Development Terms
beginning with letter H
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hatch
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noun
  1. a horizontal door in a floor or ceiling.
  2. a trapdoor.
  3. an opening in a wall at window height for the purpose of serving food or other items.
The cook passed the dishes through the serving .
  1. a small door in large mechanical structures and vehicles such as aircraft and spacecraft often provided for access for maintenance.
  2. a narrow passageway between the decks of a ship or submarine.
  3. (Often as Mayfly hatch) the phenomenon, lasting 1-2 days, of large clouds of mayfly, mayflies appearing in one location (to mate, having reached maturity)
  4. (poultry)a group of birds that emerged from eggs at a specified time.
These pullets are from an April .
verb (hatch, es)
  1. (intransitive) (of young animals) to emerge from an egg.
  2. (intransitive) (of eggs) to break open when a young animal emerges from it.
  3. (transitive) to incubate eggs; cause to hatch.
  4. (transitive) to devise. (hatch a plan)
  5. (transitive) to shade an area of a drawing or diagram with fine parallel lines, particularly with lines which cross each other: cross-hatch.
hermaphrodite
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noun
  1. An individual or organism possessing both male and female organs, typically including both types of gonads.
An earthworm is a .
  1. A person or thing possessing two opposing qualities.
  2. (nautical) A hermaphrodite brig.
adjective
  1. Having both male and female organs, typically including both types of gonads, in one individual or organism.
  2. Combining two opposing qualities.
hermaphroditism
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noun Hermaphroditism
  1. Having both male and female sexual organs.
heterogenesis
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noun
  1. (biology) abnormal, Abnormal organic development.
  2. (biology) The birth of a living being from a parent of a different kind; having two different forms in the life cycle.
heterogenetic
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adjective
  1. (biology) Of, or relating to heterogenesis
  2. (medicine) Of a disease produced by infection from outside the body
heteromorphic
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adjective
  1. (biology) Having different forms in different stages of the life cycle
  2. Differing in size or structure from the normal
heteronomous
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adjective
  1. not autonomous
  1. (biology) (of parts of an organism) differing in development or in specialization
  2. (linguistics) (of a language) being a dialect of an autonomous language
histogenesis
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noun
  1. (biology) the formation and development of the tissues of an organism from embryonic cells
holoblastic
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adjective
  1. (biology) (of an egg) cleaving, and separating into separate blastomeres
homunculus
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noun (homunculi)
  1. A little man.
  2. The nerve map of the human body that exists on the parietal lobe of the human brain.
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