What is the definition of 'ephemeral'?

The term 'ephemeral' refers to something that lasts for a very short time. This concept usually applies to experiences, events, or even natural phenomena that are fleeting and transient. For instance, a mayfly is often described as an ephemeral creature due to its brief lifespan. In literature and conversation, the word can be utilized to describe anything from a fleeting moment of beauty to temporary trends that quickly fade away.

The other choices present different meanings that do not align with the essence of 'ephemeral.' For instance, describing something as burdensome suggests a sense of difficulty or heaviness, which contrasts with the light and transient nature of ephemeral. Similarly, 'made up of various parts' implies complexity and permanence, while 'prolonged in duration' is the exact opposite of ephemeral, as it indicates something that lasts over an extended period. Thus, the definition of 'short-lived' fits perfectly with the term's connotation and usage.