Anamnesis (ἀνάμνησις) is the word that Jesus uses at the Last supper: “Do this in memory of me” (Greek: “τοῦτο ποιεῖτε εἰς τὴν ἐμὴν ἀνάμνησιν”, Luke 22:19 and 1 Corinthians 11:24–25).
In episode 7 of the Amon Sûl podcast, Fr. Andrew Damick defines anamnesis as:
The invocational memory that brings Christ’s passion and death into the here and now.
Bringing the Savior, whose salvation we remember, into the very present by means of collective invocational memory.