carbon

B2 · Upper Intermediate Uncountable noun Science

n. gases like carbon dioxide that are released into the air and cause global warming.

n. used as a shorthand for carbon dioxide or other greenhouse gas emissions, particularly in the context of climate change and environmental policy.

日本語:炭素※

“The government is trying to reduce the country's carbon footprint.”

“International treaties aim to limit carbon output by incentivizing industries to transition toward renewable energy sources and more efficient manufacturing processes.”

C1 · Advanced Uncountable noun Informal

n. a very strong, light material used to make things like bikes or car parts.

n. a lightweight, high-strength material made of thin filaments of carbon, often used in aerospace and high-performance sporting goods.

日本語:カーボン※

“His new racing bike is made entirely of carbon.”

“The aerospace engineer specified a carbon composite for the fuselage to maximize the aircraft's fuel efficiency without sacrificing structural integrity.”

C1 · Advanced Countable noun Archaic

n. a special paper used to make a copy of something you write or type.

n. a sheet of paper coated with a dark waxy pigment, used for making one or more copies of a document simultaneously with the original.

“He put a piece of carbon between the pages to make a duplicate.”

“Before the advent of digital word processing and photocopiers, clerks relied on carbon paper to produce multiple copies of legal contracts.”