Definition
A metric unit of mass equal to one one-thousandth of a kilogram (0.001 kg). One gram is approximately 0.0353 ounces, and there are about 28.35 grams in one ounce.
Plain English
A small unit of weight used in the metric system. A standard paperclip weighs about one gram.
Context Anchor
Seen in aviation maintenance manuals, parts weighing, material mixing instructions, and weight records when small amounts must be measured accurately.
Derivation
From the Late Latin 'gramma,' meaning 'a small weight,' which came from the Greek 'gramma,' originally meaning 'a letter' or 'small mark.' It became the base unit of mass in the metric system established in France in the 1790s.
Why Pilots Care
Aircraft components, fluids, and torque values are sometimes specified in metric units. Mixing up grams with ounces or kilograms can lead to incorrect servicing, fueling, or weight and balance calculations.
Intuition Check
Do not treat a gram as the same thing as an ounce or a pound. A gram is part of the metric system and is much smaller than either.
Example Sentence 1
The technician measured 50 grams of sealant for the repair.
Example Sentence 2
All removed rivets were weighed on a scale reading in grams before replacement.