gm
Học thuậtThân thiện
Definition
Noun: - Gram: A unit of mass in the metric system equal to one thousandth (1/1000) of a kilogram. It is a standard scientific and commercial unit for measuring weight.
Usage
- The word "gm" is primarily used as a written abbreviation for "gram," especially in technical, scientific, medical, or commercial contexts (e.g., on packaging, in recipes, or in lab reports). In formal writing, "g" is the more common and internationally recognized symbol.
Examples
- Noun:
- The recipe requires 250 gm of flour. (The recipe requires 250 grams of flour.)
- The letter must not exceed 20 gm to qualify for the standard postal rate. (The letter must not exceed 20 grams to qualify for the standard postal rate.)
- The dosage is 5 gm per day. (The dosage is 5 grams per day.)
Advanced Usage
- "gm" vs. "g": While "gm" is understood, the International System of Units (SI) officially designates "g" as the correct symbol for gram. Using "g" is preferred in academic and international contexts to avoid confusion.
- Compound Unit Notation: When used with prefixes in the metric system, the symbol remains "g" (e.g., kg for kilogram, mg for milligram). "gm" is not typically used in these compounded forms.
Variants and Related Words
- Gram (n): The full, unabbreviated form of the word.
- Kilogram (kg): A unit of mass equal to one thousand grams.
- Milligram (mg): A unit of mass equal to one thousandth of a gram.
Synonyms
- Gram: The full term is its own synonym.
- g: The standard symbolic abbreviation.
Notes on Usage
- Capitalization: The abbreviation "gm" is typically written in lowercase. It is not an acronym, so it does not require periods (e.g., "g.m." is generally incorrect).
- Context: Its use is almost entirely confined to written contexts where space is limited or in informal notation. In spoken language, the full word "gram" or the symbol "g" (pronounced "gram") is always used.
Noun
- a metric unit of weight equal to one thousandth of a kilogram