The term "hbomb" refers to a hydrogen bomb or a thermonuclear weapon. It is spelled phonetically as "eɪtʃ-bɒm." The first syllable "h" is pronounced as "eɪtʃ," and the second syllable "bomb" as "bɒm." The phonetic transcription accurately represents the sounds that make up the word. The use of IPA phonetic transcription is advantageous for learning how to correctly pronounce words, especially for those who are learning English as a second language.
The term "hbomb" is a slang abbreviation for hydrogen bomb, also known as a thermonuclear bomb. The word "thermonuclear" combines "thermo" meaning "pertaining to heat" and "nuclear" referring to atomic nuclei. The abbreviation "hbomb" simply takes the first letter of "hydrogen" and combines it with "bomb" to form the shorthand term.