"milestone first" is a correct and usable phrase in written English.
You can use it to describe a major accomplishment or event that has been achieved; for example, "This year we achieved a milestone first - reaching 10,000 subscribers on our YouTube channel."
Of course, there are milestone firsts.
Over 150 people took part in the milestone thousandth performance of "Random Acts of Culture".
A bookcase holds footballs from various officiating milestones: first college game, first bowl game, first N.F.L. game.
This has been corrected online.In this section Milestones First draft of history Give up the g-word Power to the people Drama and melodrama Correction: "Phèdre" Reprints Related items "Phèdre" at the National Theatre: A world firstJun 18th 2009.
Buy at Amazon.com, Amazon.co.ukIn this section Milestones First draft of history Give up the g-word Power to the people Drama and melodrama Correction: "Phèdre" ReprintsThe Spectre at the Feast: Capitalist Crisis and the Politics of Recession.
The start of the transcription process features two milestones: first, an enzyme called RNA Polymerase II starts the process; shortly afterwards, however, the process pauses and only starts again when other proteins are recruited.
Independence milestones (first sleepover, first sleepaway camp, preparing for college, moving out of parents' house or supported living).
Like the Google Lunar X Prize, the prizes would be awarded by milestones: (1) First milestone, three $2.5 million prizes for the first proof of concepts that (desk top?) propellantless acceleration is achievable, and repeated three times, each on different days.
But recent personal milestones — first-time motherhood at age 42 and a second marriage to corporate communications specialist Mike Feldman — have made Guthrie more accessible to viewers and strengthened her bond with on-air colleagues.
