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lead glass a brilliant optical glass containing lead oxide, characterized by high refraction and low dispersion; flint glass; crystal.
lead-in an introductory statement or segment, esp. in a television performance or program. [3 definitions]
leading highest in rank or most important; principal; main. [3 definitions]
leading edge the front edge of an airfoil, propeller blade, or sail that faces the wind or direction of motion. [2 definitions]
leading light an influential or guiding member, as of a community, club, or the like.
leading question a question worded in such a way as to suggest the correct or desired answer.
lead line a line with a lead weight attached to it that is lowered into water to measure its depth.
leadoff the first in any series of actions; beginning; start. [2 definitions]
lead-off leading; beginning.
lead on to cause (someone) to have a false assumption or follow an inappropriate course of action.
lead pencil a writing or drawing implement consisting of a thin rod of graphite encased in wood.
lead poisoning chronic or acute poisoning caused by the ingestion, inhalation, or absorption through the skin of lead or lead salts, characterized by anemia, constipation, abdominal pain, or convulsions, and sometimes resulting in paralysis or coma.
lead tetraethyl see tetraethyl lead.
lead time the period of time between the decision to begin a project and its completion, as between the planning and completed manufacture of a product.
leaf one of the usu. green, flat parts of a plant that grow from the stem or branch and produce food by photosynthesis, or a similar growth or structure. [7 definitions]
leafage leaves collectively; foliage.
leaf bud a bud that produces stems and leaves, but not flowers.
leaf hopper any of a family of insects that leap from one plant to another, sucking the juices and often transmitting plant diseases.
leaf insect any of various sluggish winged insects having a leaflike body in color and form.
leaf lard lard of the highest quality.
leafless combined form of leaf.