1. (n.) A knot, a knob; a protuberance; a swelling.

2. (n.) One of the two points where the orbit of a planet, or comet, intersects the ecliptic, or the orbit of a satellite intersects the plane of the orbit of its primary.

3. (n.) The joint of a stem, or the part where a leaf or several leaves are inserted.

4. (n.) A hole in the gnomon of a dial, through which passes the ray of light which marks the hour of the day, the parallels of the sun's declination, his place in the ecliptic, etc.

5. (n.) The point at which a curve crosses itself, being a double point of the curve. See Crunode, and Acnode.

6. (n.) The point at which the lines of a funicular machine meet from different angular directions; -- called also knot.

7. (n.) The knot, intrigue, or plot of a piece.

8. (n.) A hard concretion or incrustation which forms upon bones attacked with rheumatism, gout, or syphilis; sometimes also, a swelling in the neighborhood of a joint.

9. (n.) One of the fixed points of a sonorous string, when it vibrates by aliquot parts, and produces the harmonic tones; nodal line or point.

10. (n.) A swelling.

Gordian knot amplitude antinode block body cake clump cluster concrete concretion conglomerate conglomeration crest crux de Broglie wave diffraction dilemma electromagnetic radiation electromagnetic wave enigma frequency frequency band frequency spectrum guided wave in phase interference knot knotty point light longitudinal wave lump mass mechanical wave nodosity nodulation nodule nodulus nodus nonplus out of phase oxymoron paradox period periodic wave perplexity pons asinorum poser puzzle quandary radio wave ray reinforcement resonance resonance frequency seismic wave shock wave solid solid body sound wave surface wave teaser tidal wave transverse wave trough vexed question wave wave equation wave motion wave number wavelength


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