The compound "spring-summer" is a modern English formation, created by combining the names of two consecutive seasons. "Spring" originates from the Old English verb springan, meaning "to leap, burst forth, or rise," which perfectly captures the season's essence of plants sprouting and streams flowing. "Summer" comes from the Old English sumor, a term of Proto-Germanic origin for the warm season. The compound logic is straightforward and descriptive, joining two temporal concepts to denote a combined period or a characteristic spanning both, reflecting a practical need in contexts like fashion ("spring-summer collection"), agriculture, or climate description.

Structure: spring (season) + summer (season) spring: From Old English springan (to leap, burst forth). In this compound, it refers to the season of new growth and renewal. summer: From Old English sumor. Refers to the warmest season of the year.