Meaning of HOT SPOT in English

HOT SPOT

I. noun

1. : a place that is hotter than the surrounding surface: as

a. : a spot in the intake manifold of an internal-combustion engine which is heated by the exhaust gases to aid in the vaporization of the fuel

b. : an overheated spot in the combustion chamber tending to cause preignition

c. : a place in the shell of a furnace hotter than the rest

d. : an uncooled portion of a combustion chamber against which a charge is sprayed for ignition in a semidiesel engine

2. : a region of high forest-fire frequency

3.

a. : an area in a plastered wall containing alkaline salts that cause paper and paints to discolor

b. : an area on a negative or print representing excessive illumination of a part of the subject

c. : an area of excessive illumination (as on a subject or on the easel of an enlarger) in a pictorial reproduction

4. : a center of night life : nightclub

II. noun

1. : a place in the upper mantle of the earth at which hot magma from the lower mantle upwells to melt through the crust usually in the interior of a tectonic plate to form volcanic features ; also : a place in the crust overlying a hot spot

2. : an area of political, military, or civil unrest usually considered dangerous

Webster's New International English Dictionary.      Новый международный словарь английского языка Webster.