reach back

phrasal verb·1 sense·particle back

Meanings

1

Extend memory or influence into the past

Why “back”? Something returns to an earlier state.

Her interest in physics reaches back to childhood.
Her interest in physics extends back into her childhood.
Their friendship reaches back to college.
Their friendship started in college and continues from that time.

Don't confuse with

reach backreach out

Reach back means extend memory or influence into the past. Reach out means contact someone, often to offer or request help.

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Her interest in physics reaches back to childhood. What does it mean?

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