“transformed way of understanding” (Meyer & Land, 2006), that brings with it an ontological shift in the minds of learners.
— Second language use as a threshold concept: Reconceptualising language learning journeys

- properties (from ❐ Second language use as a threshold concept, in turn citing ❐ Overcoming barriers to student understanding)
- transformative: much improved understanding of subject
- probably irreversible: won't be quickly forgotten
- reminds me of aha moment
- integrative: leads to integrating ideas within subject (meaning?)
- expansive: touches other thresholds or disciplines (what?)
- troublesome: hard to grasp