The four elements of the rashis (tattva)
The twelve rashis fall into four elements: fire (tejas), earth (prithvi), air (vayu) and water (jala). Each element appears three times in the zodiac.
What it is
Fire signs are Mesha, Simha and Dhanu. Earth signs are Vrishabha, Kanya and Makara. Air signs are Mithuna, Tula and Kumbha. Water signs are Karka, Vrishchika and Meena.
How it is worked out or read
The element is a fixed label and is separate from the quality. Each sign carries one element and one quality, so Mesha is fire and movable, while Vrishabha is earth and fixed.
Where it appears on this site
The element is listed on each rashi page. The rashi index groups them.
Trines share an element
The three signs of each element are always four signs apart, forming a triangle in the zodiac. Mesha, Simha and Dhanu are the first, fifth and ninth signs, the natural trikona. This is why the trinal houses of a chart, the first, fifth and ninth, always share an element, as do the second, sixth and tenth, the third, seventh and eleventh, and the fourth, eighth and twelfth. A reader can use this to see at a glance which houses are linked by element.
Elements and temperament
Readers often link the elements to temperament: fire to energy and initiative, earth to practicality and patience, air to thought and communication, water to feeling and sensitivity. Some also relate them to the doshas of Ayurveda, fire to pitta, air to vata, and water and earth to kapha. These links are traditional associations, useful as a vocabulary, and should be read with the rest of the chart rather than as fixed rules.
Elements in a chart
A quick exercise is to count how many planets fall in each element in your chart. A strong concentration in one element is traditionally read as giving that element's tone to the temperament, and an element with no planets as a quality to be developed. This is a broad impression, not a detailed reading.
Why four elements
The four elements, fire, earth, air and water, are an old way of sorting experience, and the rashis are divided among them three at a time. The element describes the kind of energy a sign carries: fire is intense and visible, earth is practical and grounded, air is mental and social, and water is emotional and receptive. These are traditional descriptions, and they are used in Jyotish as a way to group signs rather than as a claim about physics.
Element and reading in practice
A reader who notices that several planets sit in water signs can say that the chart leans toward feeling, which is a useful summary, but should not be read as a verdict. Similarly, a chart with many earth planets is read as practical, and one with many air planets as attentive to ideas and relations. The element count is a rough guide, and it is strongest when it agrees with the Lagna, the Moon and the houses.