A preposition is a word that indicates location (in, near, beside) or some other relationship (about, after, besides) between a noun or pronoun and other parts of the sentence. A preposition isn't a preposition unless it goes with a related noun or pronoun, called the object of the preposition. Examples: Let's meet before noon. Before is a preposition; noon is its object. We've never met before. There is no object; before is an adverb modifying met. Rule 1.
Not to be confused with enophthalmia. Enophthalmos is the posterior displacement of the eyeball within the orbit due to changes in the volume of the orbit (bone) relative to its contents (the eyeball and orbital fat), or loss of function of the orbitalis muscle. It should not be confused with its opposite, exophthalmos, which is the anterior displacement of the eye.
hypertension High blood pressure; blood pressure consistently above 140/90. hydrostatic skeleton. (hy-droh-stat-ik). A skeletal system composed of fluid held under pressure in a closed body compartment; the main skeleton of most cnidarians, flatworms, nematodes, and annelids.hydroxyl group ...ypertension High blood pressure; blood pressure consistently above 140/90. hydrostatic skeleton. (hy-droh-stat-ik). A skeletal system composed of fluid held under pressure in a closed body compartment; the main skeleton of most cnidarians, flatworms, nematodes, and annelids. hydroxyl group ...