expand

verb

• become or make larger or more extensive: [no object]:their business expanded into other hotels [with object]:the work began as a short story and was later expanded into a novel
• [no object] Physics (of the universe) undergo a continuous change whereby, according to theory based on observed red shifts, all the galaxies recede from one another.
• [no object] (expand on) give a fuller version or account of:the minister expanded on the government’s proposals
• [no object] become less reserved in character or behaviour:Alice opened and expanded in this normality