Word: Metric Grain
Definition:
The term "metric grain" refers to a unit of weight that is commonly used to measure very small objects, such as pearls or diamonds. One metric grain is equal to 50 milligrams (mg) or 1/4 carat.
Usage Instructions:
You can use "metric grain" when discussing the weight of precious stones or small items.
It is often used in the context of jewelry, gemology, and the trade of precious materials.
Example Sentence:
Advanced Usage:
In professional settings, such as gemological laboratories or jewelry shops, understanding metric grains is essential for accurately assessing the value of gemstones.
When writing about gemstones, one might say, "The gem weighed 4 metric grains, which is equivalent to 200 mg."
Word Variants:
There are no direct variants of "metric grain," but you may encounter related terms in the context of weight measurement, such as "grain" (which can refer to both metric and avoirdupois systems) and "carat" (used specifically for diamonds and gemstones).
Different Meanings:
The word "grain" by itself can refer to a small, hard seed (like rice or wheat) or a unit of weight in various systems (including the avoirdupois system).
"Metric" generally refers to a system of measurement based on the meter, liter, and gram, which is used by most countries around the world.
Synonyms:
Weight unit for gems: "carat" (specifically for diamonds and gemstones, though 1 carat = 5 metric grains).
Small weight: "milligram" (though this is a more general term for measurement).
Idioms and Phrasal Verbs:
There are no specific idioms or phrasal verbs that directly relate to "metric grain," but you might use phrases like "weighing your options" when discussing choices in purchasing jewelry, which can metaphorically tie back to measuring value.
Summary:
The term "metric grain" is a specific measurement used primarily in the context of gemstones and precious materials, indicating a very small weight.