a. [ Adeno- + Gr.
n. fld>(Med.) Of or pertaining to anaphylaxis; caused by anaphylaxis. [ PJC ]
n. fld>(Med.) Shock resulting from anaphylaxis{ 2 }. It is a severe form of physiological shock, often having a fatal outcome, and is caused by an extreme immunological reaction to antigens. It is characterized by smooth muscle contraction and capillary dilation throughout the body, initiated by antibodies of the IgE class. It is usually seen when an antigen to which a person has become hypersensitized is injected intravenously or subcutaneously. It is also called
n. sn>1. [ Gr.
The cascade of events is triggered by binding of the foreign antigen to immunoglobulin E and release of mediators such as histamine, bradykinin, serotonin, and slow-reacting substance from mast cells. It involves more than one organ system. The most commonly involved organs are skin, cardiovascular, respiratory and gastrointestinal systems. Anaphylaxis is manifested by a range of signs and symptoms including pruritus, urticaria, itching, dyspnea, abdominal pain and cardiovascular collapse (shock). A severe form of the reaction is called anaphylactic shock. [ Stedman ] [ PJC + AS ]
a. [ Gr. &unr_; unequal + &unr_; leaf. ] (Bot.) Having unequal leaves. [ 1913 Webster ]
a. [ Gr. &unr_; irregular + &unr_; leaf. ] (Bot.) Having leaves irregularly placed. [ 1913 Webster ]
n. [ NL. anthophyllum clove. ] A mineral of the hornblende group, of a yellowish gray or clove brown color. --
a. [ Gr. &unr_;;
n. [ Pref. apo- + Gr. &unr_; leaf; so called from its foliated structure or easy cleavage. ] (Min.) A mineral relating to the zeolites, usually occurring in square prisms or octahedrons with pearly luster on the cleavage surface. It is a hydrous silicate of calcium and potassium. [ 1913 Webster ]
n.
n.
n. [ Gr.
n. [ Gr.
a. [ Gr. &unr_; clove tree; &unr_; nut + &unr_; leaf. ] (Bot.)
n. an order of plants which corresponds approximately to the older group Centrospermae.
n. a group of families of mostly flowers having basal or free-central placentation and trinucleate pollen (binucleate pollen is commoner in flowering plants); it contains 14 families including:
n. (Chem.) A tasteless and odorless crystalline substance, extracted from cloves, polymeric with common camphor. [ 1913 Webster ]
a. Caryophyllaceous. [ 1913 Webster ]
n. a natural family coextensive with the genus
n. the sole genus constituting the family
n. [ Gr.
n. a genus of tropical American evergreen trees or shrubs.
n. [ Gr. &unr_; a sprout + &unr_; a leaf. ] (Bot.) A special branch, resembling a leaf, as in the apparent foliage of the broom (
n. [ Gr.
n. [ Gr.
a. [ NL. cyathophyllum, fr. Gr.
n. (Paleon.) A fossil coral of the family
a. [ Pref. deca- + Gr. &unr_; leaf: cf. F. décaphylle. ] (Bot.) Having ten leaves. [ 1913 Webster ]
a. [ Gr.
n. a genus of dicotyledonous plants having only one species.
a. [ Gr. &unr_; eleven + &unr_; leaf. ] (Bot.) Composed of eleven leaflets; -- said of a leaf. [ 1913 Webster ]
a. [ Endo- + Gr.
a. [ Gr.
a. [ Gr.
‖n. [ NL. ] (Bot.) A genus of cactaceous plants having flattened, jointed stems, and petals united in a tube. The flowers are very showy, and several species are in cultivation.
n. a genus of hairy herbs and shrubs of Western North America.
a. [ Exo- + Gr. &unr_; . ] (Bot.) Not sheathed in another leaf. [ 1913 Webster ]
a. [ Gr. &unr_; marriage + &unr_; leaf. ] (Bot.) Composed of leaves united by their edges (coalescent). Gray. [ 1913 Webster ]
n. A small genus of large epiphytic or terrestrial orchids of Southeastern Asia to Polynesia; the giants of the
a. [ Hepta- + Gr. &unr_; leaf: cf. F. heptaphylle. ] (Bot.) Having seven leaves. [ 1913 Webster ]
a. [ Gr. &unr_; other + &unr_; leaf: cf. F. hétérophylle. ] (Bot.) Having leaves of more than one shape on the same plant. [ 1913 Webster ]
a. [ Hexa- + Gr. &unr_; a leaf: cf. F. hexaphylle. ] (Bot.) Having six leaves or leaflets. [ 1913 Webster ]
n. [ Gr.
a. (Biol.) Relating to homophily. [ 1913 Webster ]
n. [ Homo- + Gr. &unr_; a clan. ] (Biol.) That form of homology due to common ancestry (phylogenetic homology), in opposition to homomorphy, to which genealogic basis is wanting. Haeckel. [ 1913 Webster ]
‖n.;
a. [ Pref. hypo- + Gr. &unr_; leaf. ] (Bot.) Being or growing on the under side of a leaf, as the fruit dots of ferns. [ 1913 Webster ]
n. (Bot.) Same as Cyanophyll. [ 1913 Webster ]