Phrase guide
Definitions and examples are grouped by meaning. Pronunciation, history, word forms, translations, descendants, synonyms, antonyms, derived terms, and related words appear whenever the source provides them.
Sound
Each Play button uses your device's default local English voice, or a natural local fallback. The selected voice name appears after playback. This is synthesized speech, not a source recording.
No pronunciation record was provided for this word.
noun
Any undesired image appearing at the image plane of an optical system; either a false image of the desired object, or an out-of-focus image of a bright source of light in the field of the optical system.
Definition source: English Wiktionary via Wiktextract
Topics: arts, hobbies, lifestyle, photography
No example sentence was provided for this meaning.
Synonyms: none provided
Antonyms: none provided
noun
A copy of all the contents of a hard drive, used as a backup.
Definition source: English Wiktionary via Wiktextract
Topics: computing, engineering, mathematics, natural-sciences, physical-sciences, sciences
No example sentence was provided for this meaning.
Synonyms: none provided
Antonyms: none provided
History
From ghost (noun sense 3, via noun sense 4).
After the Norton Ghost disk-cloning and backup software tool, itself an initialism of general hardware-oriented system transfer.
Across languages
3 source translations are retained for this English entry.
