lens pit

pit (pit)

1. a hollow fovea or indentation.

2. a pockmark.

3. a small depression or fault in the dental enamel.

4. to indent, or to become and remain for a few minutes indented, by pressure.

5. a small depression in the nail plate.

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anal pit  proctodeum.

arm pit  the axilla or axillary fossa.

coated pits  small clathrin-coated pits occurring in the plasma membrane of many cells and involved in receptor-mediated endocytosis.

ear pit  preauricular p.

lens pit  a pitlike depression in the ectoderm of the lens placode where the primordial lens is developing.

olfactory pit  the primordium of a nasal cavity.

otic pit  a depression appearing in each otic placode, marking the beginning of embryonic development of the internal ear.

preauricular pit  a small depression anterior to the helix of the ear, sometimes leading to a fistula or congenital preauricular cyst.

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lens pit

n.

Either of a pair of depressions in the superficial ectoderm of the embryonic head where the lens develops.

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pit

1. a hollow fovea or indentation.

2. a pockmark.

3. to indent, or to become and remain for a few minutes indented, by pressure.

4. seed of a fruit, e.g. cherry. Strictly refers to the hard woody coating which surrounds the seed.

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anal pit

the proctodeum of the embryo.

auditory pit

a distinct depression in each auditory placode, marking the beginning of the embryonic development of the internal ear.

pit bull

a term used in describing various types of dogs used in past times for fighting in pits. Now, usually refers to the specific breed, american pit bull terrier.

lens pit

a pitlike depression in the fetal head where the lens develops.

nasal pit

a depression appearing in the olfactory placodes in the early stages of development of the nose. Called also olfactory pit.

olfactory pit

see nasal pit (above).

otic pit

early stage in the development of the embryonic inner ear.

pit pony

pony used in a mine to haul mined rock. Breed varies as long as it is small, e.g. Shetland pony.

pit of stomach

the epigastric fossa or epigastric region.

pit viper

see viper.