Last Updated：2025/11/21
A substance, natural or man-made, which is intrinsically dangerous or otherwise poses a safety hazard. Examples are materials which are explosive, poisonous, chemically active (including acids and other corrosives), radioactive, or biologically active (including human blood and other medical waste).
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hazardous material
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Source Word
hazardous material
Noun
A
substance,
natural
or
man-made,
which
is
intrinsically
dangerous
or
otherwise
poses
a
safety
hazard.
Examples
are
materials
which
are
explosive,
poisonous,
chemically
active
(including
acids
and
other
corrosives),
radioactive,
or
biologically
active
(including
human
blood
and
other
medical
waste).
Japanese Meaning
危険物質：自然または人工的に存在し、内在的に危険であったり安全上のリスクを引き起こす物質を指す。具体的には、爆発性、毒性、化学的に活性（酸やその他の腐食性物質を含む）、放射性、生物学的に活性（例：人間の血液やその他の医療廃棄物）な物質が含まれる。
Sense（1）
A
substance,
natural
or
man-made,
which
is
intrinsically
dangerous
or
otherwise
poses
a
safety
hazard.
Examples
are
materials
which
are
explosive,
poisonous,
chemically
active
(including
acids
and
other
corrosives),
radioactive,
or
biologically
active
(including
human
blood
and
other
medical
waste).
（ plural ）
