giga
giga — prefix
1. a prefix placed before a unit of measurement (such as watt, byte, or hertz) to m
a prefix placed before a unit of measurement (such as watt, byte, or hertz) to make it mean one billion (1,000,000,000) times the original amount
Otis downloaded a game that needs over eighty gigabytes of free space.
giga + byte: unit of digital storage
Zuri's new laptop connects to Wi-Fi at speeds of several gigabits per second.
A large offshore wind farm near Taiwan can generate two gigawatts of electricity.
Modern smartphones use processors that operate at speeds above two gigahertz.
The data centre stores over five hundred gigabytes of scientific research.
- billion
the equivalent numeric value (e.g. a billion watts vs. a gigawatt)
文法句型
giga + [unit of measurement]
用法筆記
Commonly attached to units in computing (byte, bit, hertz) and energy (watt). The binary computing meaning (2^30 = 1,073,741,824) exists for memory measurements but is less common in everyday use.
常見錯誤
giga — combining form
1. the number 10^9 (1,000,000,000, or one billion), used as a multiplier in scienti
the number 10^9 (1,000,000,000, or one billion), used as a multiplier in scientific and technical notation
Naoko's physics textbook explained that giga equals ten to the ninth power.
giga = 10^9 in scientific notation
Karim wrote 'giga = 1,000,000,000' on the whiteboard during science class.
The combining form giga helps scientists describe enormous quantities without writing many zeros.
Camille learned that giga, meaning one billion, is part of the International System of Units.
- one billion
the plain-English equivalent of the giga factor
- thousand million
an alternative way of expressing 10^9, more common in British English
文法句型
giga = 10^9
用法筆記
This sense treats giga as the mathematical factor itself rather than as a prefix attached to a unit. It appears most often in science textbooks, lecture slides, and technical documentation describing the metric system.