see nephritis. interstitial fluid pressure. pressure exerted by the free interstitial fluid; if the pressure is negative this tends to suck fluid out of the vascular system and into the tissue space; if the pressure is greater than the intravascular pressure fluid tends to move out of the tissue space.interstitial pneumonia. see pneumonia.ee nephritis. interstitial fluid pressure. pressure exerted by the free interstitial fluid; if the pressure is negative this tends to suck fluid out of the vascular system and into the tissue space; if the pressure is greater than the intravascular pressure fluid tends to move out of the tissue space.
1 'A catch phrase is a phrase that has caught on, and pleases the populace.' I'll go along with that, provided these substitutions be accepted: 'saying' for 'phrase'; and 'public' for the tendentious 'populace.'. ( 2 Eric Partridge, A Dictionary of Catch Phrases. 3  Routledge, 1986).
The definition of catch in such a context as this is: a hidden problem or disadvantage in an apparently ideal situation. according to the New Oxford American Dictionary.he phrase comes from the noun form of 'catch', meaning a hook, post, lever or other device designed to grab something as it's moving past and stop it, or to hook into something that's moveable and prevent it from moving. For example, if someone tells you Hurry up now and buy this great offer!