Related Words

Nodes: The two points in a planet's orbit which intercept the Earth's path around the sun (otherwise known as the ecliptic).

Internodes: The stem regions between nodes in plants.

Lunar Nodes: The points where the plane of the Moon's orbit intersects the ecliptic. The point where the Moon crosses in going from south to north is called the ascending node and the point where the cro . . . View Full Definition

kwa: The area between the leg and the groin, containing 56 lymph nodes. The kwa folds and unfolds constantly in Tai chi movement.

Buboe: Infected lymph nodes associated with the bubonic plague.

Palinode: An ode or song that retracts what the poet wrote in a previous poem: a recantation.

Penetration: A proportion of households owning televisions or subscribing to cable.

Node Cycle: Period of approximately 18.61 Julian years required for the regression of the Moon's nodes to complete a circuit of 360° of longitude. It is accompanied by a corresponding cycle of changing . . . View Full Definition

F Orbital: An orbital with angular momentum quantum number ell = 2. The f orbitals generally have 3 nuclear nodes and rather complex shapes.

Planetary Node: The point at which a planet's path intersects the ecliptic; declination, 0°. The term is usually reserved for nodes other than the Moon's Nodes.