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(important) milestone in (one's) life

An exceptionally momentous, significant, or impactful moment, situation, or event in one's life. There is no milestone in your life that will ever compare with the birth of your child. I knew even then that that conversation would prove to an important milestone in my life.
See also: life, milestone

milestone in someone's life

 and important milestone in someone's life
a very important event or point in one's life. (From the [former] stone markers at the side of a road showing the distance to or from a place.) Joan's wedding was a milestone in her mother's life. The birth of a child is a milestone in every parent's life.
See also: life, milestone
References in periodicals archive ?
Cisco Systems and MILESTONE have an important strategic alliance.
Jan, from Fixby, said: "The centre stone is probably one of the original turnpike milestones that were replaced by the West Riding County Council around 1880, when they started using cast iron ones.
Dallas-based Milestone Management will provide continuity and ensure the efficient transition of the portfolio's ownership for both residents and associates.
It is in relation to this hypermasculine style of superhero books, either Image's own titles or the many imitations they have inspired, that many readers interpret the Milestone books.
Working with The Milestone Group, our aim in this undertaking is to unlock value and unrealized cash flow as the national and local economies continue to improve.
The gene that has now reached a developmental milestone under the agreement is one of six novel gene candidates which were selected for further development out of numerous potential target genes discovered and patented as a result of the research collaboration between QBI and Mitsubishi.
GE Capital Aviation Services (GECAS), the aircraft leasing unit of GE (NYSE:GE), announced on Friday the completion and closing of its acquisition of Milestone Aviation Group, a helicopter leasing company, based in Dublin, for USD1.
Bringing Milestone into the Canon Group will significantly enhance Canon s software capabilities in this sector.
E-10A Milestone Decision/MP RTIP Program Review -- March 3, 2005
The Milestone Group, a rapidly growing national real estate investment firm, has completed the acquisition of a vacant warehouse facility located at 5-15 49th Avenue in the Hunters Point area of Long Island City, NY for $5.
Milestone Technologies Inc (MILESTONE) announced on Wednesday that its Apple Business Unit (Apple Practice) is to be run by Bob Wambaugh, Apple's Director of Worldwide Enterprise Customer Care.
The Milestone Group, a rapidly growing national real estate investment firm, today announced it recently closed Milestone Real Estate Investors I, L.