The story
From floor + time, from the idea of engaging with the child playing on the floor.
Etymology from Wiktionary, CC BY-SA 4.0.
Today it means: A form of therapeutic intervention, used mainly with autistic children, in which the therapist meets the child at its current developmental level and entices it to move up a hierarchy of developmental milestones. Full definition →
From floor + time, from the idea of engaging with the child playing on the floor.
Etymology from Wiktionary, CC BY-SA 4.0.