σαββατισμόςsabbatismós

a "sabbatism", i.e. (figuratively) the repose of Christianity (as a type of heaven)

Greek (New Testament) · G4520

Meanings

a keeping sabbath, a sabbath rest: metaphorically, as in Mishna (Zorell, under that word), Hebrews 4:9.

Same root

σάββατονsábbaton · G4521the Sabbath (i.e. Shabbath), or day of weekly repose from secular avocations (also the observance or institution itself); by extension, a se'nnight, i.e. the interval between two Sabbaths; likewise the plural in all the above applications

Where it appears

Appears 1 times in the Bible.

Hebrews 4:9 So there is a special rest still waiting for the people of God.

Source: G. Abbott-Smith, A Manual Greek Lexicon of the New Testament (1922), public domain.