H-bomb 
noun
Another term for hydrogen bomb.The first United States explosion of an H-bomb, or hydrogen bomb, took place in 1952....
- Beginning in the early 1950s, atomic bombs were used as detonators for the most powerful explosives of all, thermonuclear hydrogen bombs, or H-bombs.
- The acts on this collection grew up under the shadow of the H-bomb, the atomic bomb, the nuclear missile but were also introduced to space travel, to television, to the computer.
Origin
1950s: from H2 (denoting hydrogen) + bomb.
- lunar day
- lunar distance
- lunar eclipse
- Lunarian
- lunar module
- lunar month
- lunar node
- lunar observation
- lunar rover
- lunar roving vehicle
- lunar year
- lunate
- lunate bone
- lunatic
- lunatic asylum
- lunatic fringe
- lunatic soup
- lunation
- lunch
- lunch box
- lunch break
- luncheon
- luncheonette
- luncheon meat
- luncheon voucher