Not having seeds or not having noticeable seeds.(adjective)
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Use "seedless" in a sentence
"Best of all varieties called seedless, but the large staminate tree nearby spoils that feature."
"One Georgia grower got a flurry of comments that his so-called seedless watermelons had seeds."
"In their public discussion, Dr. Poirier said the new rules are flawed because decades of traditional plant breeding had led to widely available sterile fruit, such as seedless grapes."