A poorly cohesive gastric adenocarcinoma characterized by malignant cells containing intracytoplasmic mucin. The disease is signet ring cell gastric adenocarcinoma (Monarch Disease Ontology entry MONDO_0006409). Also known as: gastric signet Ring cell adenocarcinoma, gastric signet ring cell adenocarcinoma, signet Ring cell adenocarcinoma of stomach, signet Ring cell adenocarcinoma of the stomach, signet Ring cell stomach adenocarcinoma.