flat cord
41Tennis terminology — The following is a list of tennis terms, sorted alphabetically.TOC|left|Contents A* Ace ndash; a serve where the tennis ball served is served in and not touched by the receiver, aces are usually powerful and generally land on or near the one of… …
42Rock-climbing equipment — Rock climbing History Styles Technique Equipment and protection Grades (difficulty of climb) Terminology Belaying Abseiling …
43Model 500 telephone — Western Electric model 500 set made in 1951 By 1975, the Model 500 layout …
44Cell — The basic structural and functional unit in people and all living things. Each cell is a small container of chemicals and water wrapped in a membrane. Each cell in the human body there are 100 trillion cells in each of us contains the entire… …
45heteropteran — ▪ insect order Introduction any member of the insect order Heteroptera, which comprises the so called true bugs. (Some authorities use the name Hemiptera; others consider both the heteropterans and the homopterans to be suborders of the… …
46Monson Railroad — Locale Maine Dates of operation 1883–1943 Track gauge 2 ft  (610 mm) Length 6¼ miles Headquarters Lowell, Massachuset …
47NEMA connector — Twist lock connector redirects here. For the device used in intermodal shipping, see Twistlock. Ungrounded and grounded power plugs …
48balloon flight — ▪ aviation Introduction passage through the air of a balloon that contains a buoyant gas, such as helium or heated air, for which reason it is also known as lighter than air free flight. Unmanned balloons have been used to carry meteorological… …
49Serve (tennis) — A serve (or, more formally, a service) in tennis is a shot to start a point. The serve is usually initiated by tossing the ball into the air and hitting it (usually near the apex of its trajectory) into the diagonally opposite service box without …
50Insect morphology — Legend of body parts Tagmata : A Head, B Thorax, C Abdomen. 1. antenna 2. ocelli (lower) 3. ocelli (upper) 4. compound eye 5. brain (cerebral ganglia) 6. prothorax …
