half-century

the building stood as a reminder of a half-century of progress in the city.

the band celebrated its half-century anniversary with a reunion concert.

looking back, it's hard to believe it's been a half-century since that event.

the veteran journalist reflected on a half-century of covering world events.

the film marked the director's half-century in the movie industry.

the museum showcased artifacts from a half-century of archaeological discoveries.

it's been a half-century since the invention of the microchip, changing the world.

the company is planning a gala to commemorate its half-century milestone.

she dedicated a half-century to teaching and inspiring young minds.

the research project spanned a half-century, yielding significant results.