…a flat surface on which a straight line joining any two points on it would wholly lie…
…a tool consisting of a block with a projecting steel blade, used to smooth a wooden or other surface by paring shavings from it…
…a tall spreading tree of the northern hemisphere, with maple-like leaves and bark which peels in uneven patches…
…an aeroplane having its undercarriage fitted with skis for landing on snow or ice…
…a carpenter’s plane with a blade set at an acute angle, used especially for planing across the end grain of wood…
…the plane through the focus perpendicular to the axis of a mirror or lens…
…a surveying instrument used for direct plotting in the field, with a circular drawing board and pivoted alidade…
…an infinite two-dimensional space representing the set of complex numbers, especially one in which Cartesian coordinates represent the real and imaginary parts of the complex numbers…
…an imaginary plane dividing the body into dorsal and ventral parts…
…a plane tree which is considered to be a hybrid between the American and the oriental planes. Its flaking bark renders it resistant to pollution and it is widely planted in towns…
…(in perspective painting or drawing) the imaginary plane corresponding to the surface of a picture, perpendicular to the viewer’s line of sight…
…the practice of determining a ship’s position on the theory that it is moving on a plane…
…a long, heavy plane used in smoothing the edges of roughly planed wood…
…a process restricting the vibrations of electromagnetic radiation, especially light, to one direction…
…an early type of aircraft with two pairs of wings, one above the other…
…an early type of aeroplane with three pairs of wings, one above the other…
…a board to which the main circuit boards of a computer may be connected, and which provides connections between them…
…a tall spreading tree of the northern hemisphere, with maple-like leaves and bark which peels in uneven patches…
…an amount of cargo or number of passengers that will fill an aircraft…
…an aircraft equipped with floats for landing on water; a seaplane…
…an aircraft that takes off and lands conventionally but is capable of entry into orbit or travel through space…
