Zazenkai A zazenkai (座禅会), literally meaning “to come together for meditation,” is a Zen Buddhist retreat that is usually less intensive and of shorter duration than sesshin. At AZC, most Zazenkai retreats are half-day in length during the weekend. Share this: Click to share on Facebook (Opens in new window) Facebook Click to share on X (Opens in new window) X Click to print (Opens in new window) Print Click to email a link to a friend (Opens in new window) Email Click to share on LinkedIn (Opens in new window) LinkedIn