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.
For other uses, see FOP (disambiguation). Fop became a pejorative term for a foolish man excessively concerned with his appearance and clothes in 17th-century England. Some of the very many similar alternative terms are coxcomb, fribble, popinjay (meaning 'parrot'), fashion-monger, and ninny.