Army medical examiners were suspicious about the close proximity of the three bullet holes in Pat Tillmanâs forehead and tried without success to get authorities to investigate whether the former NFL playerâs death amounted to a crime, according to documents obtained by The Associated Press.
Membrane. Definition. noun, plural: membranes. (1) (biology) A thin layer of tissue covering a surface or lining a cavity, space or organ. (2) (biology) A cell membrane. (3) (chemistry) A thin pliable sheet of material that is permeable to substances in solution.Supplement. A biological membrane functions by protecting the surface or bodily organ.1) (biology) A thin layer of tissue covering a surface or lining a cavity, space or organ. (2) (biology) A cell membrane. (3) (chemistry) A thin pliable sheet of material that is permeable to substances in solution. Supplement. A biological membrane functions by protecting the surface or bodily organ.
n. pl. morÂ·pholÂ·oÂ·gies. 1. a. The branch of biology that deals with the form and structure of organisms without consideration of function. b. The form and structure of an organism or one of its parts: the morphology of a cell; the morphology of vertebrates. 2. Linguistics The study of the structure and form of words in language or a language, including inflection, derivation, and the formation of compounds.