8-Letter Words Containing: OGRA

• an image of a structure that is produced by ultrasonography (reflections of high-frequency sound waves); used to observe fetal growth or to study bodily organs

• one thousand grams; the basic unit of mass adopted under the Systeme International d'Unites

• the intermediate photograph (or photographic record) that contains information for reproducing a three-dimensional image by holography

• an X ray of a vein injected with a radiopaque contrast medium

• A catalogue of the typical behaviour patterns of a species.