invitation noun (ASK TO AN EVENT). A2 [C or U] the âact of âinviting someone to go to an âevent: Thanks for the invitation to âyour âbirthday âparty. I'm âhappy to âaccept âyour invitation. The first âday of the âexhibition will be by invitation (only) (= only those who have been âinvited can come).
fibrodysplasia ossificans progressiva. Description. Fibrodysplasia ossificans progressiva (FOP) is a disorder in which muscle tissue and connective tissue such as tendons and ligaments are gradually replaced by bone (ossified), forming bone outside the skeleton (extra-skeletal or heterotopic bone) that constrains movement.
PERSTEMPO is one aspect of OPTEMPO (Operation Tempo). OPTEMPO measures a weapon system's or unit's activity level, deployed or at home station, while PERSTEMPO measures an individual's temporary duty away from home station.. AF defines PERSTEMPO as days per year an individual is TDY from home station -- Day away is a day away.