nd

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Definition

  1. Proper noun:

    • North Dakota: A state located in the north central region of the United States, sharing a border with Canada. It is commonly abbreviated as "ND".

  2. Symbol (Chemistry):

    • Neodymium: A chemical element with the symbol Nd and atomic number 60. It is a soft, silvery, malleable, and ductile rare-earth metal that is part of the lanthanide series. It is trivalent (has a +3 oxidation state) and is found in minerals such as monazite and bastnäsite alongside other rare-earth elements like cerium, lanthanum, and praseodymium.
Usage Examples

  • Proper noun (North Dakota):

    • Fargo is the largest city in ND.
    • The postal abbreviation for North Dakota is ND.

  • Symbol (Neodymium):

    • The magnet was made from an alloy containing Nd.
    • Nd is used in the production of powerful permanent magnets.
Advanced Usage

  • In formal contexts: "ND" is the official two-letter postal code and standard abbreviation for the state of North Dakota, used in addresses and data fields.

    • Please list your state as ND on the form.

  • In scientific notation: The symbol "Nd" is always capitalized in chemical formulas and periodic tables to represent the element neodymium.

    • The compound's formula is Nd₂O₃.
Variants and Related Words
  • North Dakota: The full name of the U.S. state.
  • Neodymium: The full name of the chemical element.
Synonyms
  • For the state: (No true synonyms; it is a proper noun. The abbreviation "N. Dak." is an older, less common variant.)
  • For the element: (No synonyms; it is a specific element symbol.)
Related Phrases
  • ND filter: Stands for "Neutral Density" filter, a photographic filter. (Note: This is a distinct acronym from the target word 'nd' but is a common homograph in technical fields.)
  • Ph.D.: Abbreviation for Doctor of Philosophy. (Note: The lowercase "nd" can appear in ordinal number suffixes like "2nd", but this is a separate linguistic unit, not the target word.)
Notes on Usage
  • As an abbreviation for a U.S. state, "ND" is always written in capital letters.
  • As a chemical symbol, "Nd" is written with a capital 'N' and a lowercase 'd'.
  • The word 'nd' is almost exclusively used in its abbreviated forms and is rarely, if ever, encountered as a standalone word in prose. Its meaning is entirely dependent on context (geographical or scientific).
Noun
  1. a state of north central United States bordering on Canada
  2. a yellow trivalent metallic element of the rare earth group; occurs in monazite and bastnasite in association with cerium and lanthanum and praseodymium

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