Dictionary Home »
Science » spicule
spicule science definition
- A needlelike structure or part, such as one of the mineral structures supporting the soft tissue of certain invertebrates, especially sponges.
- Any of numerous short-lived vertical jets of hot gas rising from the solar chromosphere and extending into the corona. Spicules, which only last for about five to ten minutes, are usually several hundred kilometers wide and several thousand kilometers high.
Learn more about spicule