The time for the earth to make one revolution around the sun, measured between two vernal equinoxes WordNet 3.0 & Open English WordNet

A tropical year or solar year is the time that the Sun takes to return to the same position in the sky of a celestial body of the Solar System such as the Earth, completing a full cycle of seasons; for example, the time from vernal equinox to vernal equinox, or from summer solstice to summer solstice. Wikipedia

Period of time for the ecliptic longitude of the Sun to increase 360° Wikidata

The time it takes for any planetary body to make one revolution around another body. OmegaWiki

The time it takes the Earth to complete one revolution of the Sun (between 365.24 and 365.26 days depending on the point of reference). OmegaWiki

The time it takes the Earth to pass once around the Sun, particularly a tropical, sidereal, or anomalistic year. Wiktionary

The time it takes the Earth to pass once around the Sun, as reckoned with respect to the seasons and not the fixed stars (for instance from vernal equinox to vernal equinox). Wiktionary

The time that it takes for the Sun to return to the same position along the ecliptic, as viewed from the Earth, especially. Wiktionary