1. (n.)intensity the quality or condition of being intense.
2. intensity great energy, strength, concentration, or vehemence, as of activity.
3. intensity a high or extreme degree, as of cold or heat.
4. intensity the degree or extent to which something is intense.
5. intensity a high degree of emotional excitement; depth of feeling.
6. intensity the strength or sharpness of a color due esp. to its degree of freedom from admixture with its complementary color.
7. intensity Physics. magnitude, as of energy or a force per unit of area, volume, time, etc.
Etymology: (1655–65)
Definition of 'intensity'
Princeton's WordNet
1. (noun)intensity, strength, intensity level the amount of energy transmitted (as by acoustic or electromagnetic radiation) "he adjusted the intensity of the sound"; "they measured the station's signal strength"
2. (noun)intensity, intensiveness high level or degree; the property of being intense
3. (noun)volume, loudness, intensity the magnitude of sound (usually in a specified direction) "the kids played their music at full volume"
4. (noun)saturation, chroma, intensity, vividness chromatic purity: freedom from dilution with white and hence vivid in hue
Definition of 'intensity'
Webster Dictionary
1. (noun)intensity the state or quality of being intense; intenseness; extreme degree; as, intensity of heat, cold, mental application, passion, etc
2. (noun)intensity the amount or degree of energy with which a force operates or a cause acts; effectiveness, as estimated by results produced
3. (noun)intensity the magnitude of a distributed force, as pressure, stress, weight, etc., per unit of surface, or of volume, as the case may be; as, the measure of the intensity of a total stress of forty pounds which is distributed uniformly over a surface of four square inches area is ten pounds per square inch
4. (noun)intensity the degree or depth of shade in a picture
Definitions of intensity 
Afrikaans: intensiteit
Arabic: شِدَّه، كَثافَه
Bulgarian: интензивност
Brazilian: intensidade
Czech: intenzita
German: die Intensität
Danish: intensitet
Greek: ένταση, σφοδρότητα
Spanish: intensidad
Estonian: tugevus
Farsi: شدت
Finnish: voimakkuus
French: intensité
Hebrew: עוֹצמָה
Hindi: उत्कटता, प्रचंडता
Croatian: intenzivnost
Hungarian: intenzitás
Indonesian: intensitas
Icelandic: mikill kraftur/magn
Italian: intensità
Japanese: 強烈さ
Korean: 강렬
Lithuanian: intensyvumas
Latvian: intensitāte
Malay: terlalu panas
Dutch: intensiteit
Norwegian: styrke, kraft, intensitet
Polish: intensywność
Persian: شدت
Pashto: شدت
Portuguese: intensidade
Romanian: intensitate
Russian: интенсивность
Slovak: sila, výkonnosť, intenzit
Slovenian: jakost
Serbian: intenzitet
Swedish: intensitet
Thai: ความรุนแรง
Turkish: şiddet, yoğunluk
Taiwanese: 強度
Ukrainian: сила, інтенсивність
Urdu: شدّت
Vietnamese: cường độ
Chinese: 强度
