Definitions from Wiktionary (PN)

▸ noun:  Initialism of part number.
▸ noun:  (medicine) Abbreviation of practical nurse. [A person who is certified to provide custodial care such as help in walking, bathing, and feeding.]
▸ noun:  Initialism of proportional navigation. [A form of navigation used by homing missiles, based on the fact that two vehicles are on a collision course when their direct line of sight does not change direction as the range closes.]
▸ noun:  (linguistics) Abbreviation of proper noun. [(grammar) A word or phrase that is a noun denoting a particular person, place, organization, ship, animal, event, or other individual entity.]
▸ noun:  (astronomy) Initialism of planetary nebula. [(astronomy) A nebulosity surrounding a dying red giant, consisting of material expelled by the star.]
▸ noun:  (Malaysia, politics, uncountable) Initialism of Perikatan Nasional (“National Alliance”).





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