rocket science
Proposed by a contributor, not yet supported by evidence.
Meaning · English
Something that is very difficult or requires expert knowledge
Nghĩa · Tiếng Việt
một việc gì đó rất khó hoặc đòi hỏi kiến thức chuyên môn
Machine-translated — suggest a fix
Literally: science of rockets
Where it’s used:
Used
Widespread English
Examples
I don't understand why you think this is rocket science, it's simple
AI-drafted example auto-approved by rule (illustrative, not a corpus attestation)
Sources & notes
Listed in Wiktionary’s “English idioms” category (retrieved 2026-07-29); definition pending editorial review. Definition drafted by AI (@cf/meta/llama-3.3-70b-instruct-fp8-fast) and auto-approved by rule on 2026-07-31; pending editor spot-check.
Common questions
What does “rocket science” mean?
Something that is very difficult or requires expert knowledge Literally: science of rockets
Is “rocket science” formal or informal?
No register label has been reviewed yet — treat it as neutral and check the usage notes above.