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1. hydrogen
noun.
(ˈhaɪdrədʒən)
A
nonmetallic
univalent
element
that
is
normally
a
colorless
and
odorless
highly
flammable
diatomic
gas;
the
simplest
and
lightest
and
most
abundant
element
in
the
universe.
Synonyms
atomic number 1
chemical element
gas
tritium
H
H2O
water
element
Antonyms
understate
unleaded gasoline
leaded gasoline
defend
fresh water
Etymology
hydrogen (English)
hydrogène (French)
-gène (French)
hydro- (French)
ὑδρο- (Ancient Greek (to 1453))
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2. hydrogen-bomb
verb.
Attack
with
a
hydrogen
bomb.
Synonyms
bombard
bomb
Antonyms
defend
dumb bomb
smart bomb
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challenge
white-person
fuselage
focus
know-it-all
homophobic
aesthetic
mental-health
telugu
for-the-first-time
out-of-the-box thinking
gujarati
develop
potential
creative
technology
define
online
skullduggery
good
rye-bread
mantra
negative-impact
campaign
availability
occidental
deep-understanding
hypertext
help
talon
nuance
love
different
bittersweet
happy
assistance
some
beautiful
masochist
video
positivity
calmness
important
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