phantom

/หˆfรฆntษ™m/

IPA: /F AE1 N T AH0 M/

noun
  1. 1

    A ghost or apparition.

  2. 2

    Something apparently seen, heard, or sensed, but having no physical reality; an image that appears only in the mind; an illusion or delusion.

  3. 3

    A placeholder for a pair of players when there are an odd number of pairs playing.

  4. 4

    (medical imaging) A test object.

Synonyms

adjective
  1. 1

    Illusive.

  2. 2

    Fictitious or nonexistent.

    โ€œa phantom limbโ€

Source: https://en.wiktionary.org/wiki/phantom