| pebble |
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noun
- A small stone
- (geology) A rock fragment between 4 and 64 millimetres in diameter (especially a naturally rounded one)
- (curling) A small droplet of water intentionally sprayed on the ice that cause irregularities on the surface.
verb to pebble
- To pave with pebbles.
- (curling) To deposit water droplets on the ice. e.g. to pebble the ice between games.
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| perimeter |
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noun
- (mathematics) The sum of the distance of all the lengths of the sides of an object.
- The outer limits of an area. See Synonyms at circumference.
- (mathematics) The length of such a boundary.
- A fortified strip or boundary usually protecting a military position.
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| photogene |
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noun - (dated) An afterimage
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| photopia |
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noun
- Normal daylight vision, in which the cone cells are used
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| presbyopia |
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noun
- inability, Inability of the eye, due to ageing, to focus on nearby objects
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| purblind |
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adjective
- Partially blind.
- Lacking in discernment or understanding.
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