How to Say "cutting edge" in Spanish
The Spanish word for “cutting edge” is “frontera” — C1 level.
English → SpanishC1
nounC1formal
The furthest point of development (often plural)

Examples
Los científicos están empujando las fronteras del conocimiento humano.
The scientists are pushing the limits of human knowledge.
Su arte se encuentra en la frontera entre la pintura y la escultura.
His art is found on the boundary between painting and sculpture.
Figurative Use
In this abstract sense, 'frontera' often appears in the plural ('las fronteras') when talking about the limits of an entire field, like science or art.
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