- 伪阴性 wěiyīnxìng false negative
- 假阴性 jiǎyīnxìng false negative
- 呈阴性 chéngyīnxìng test negativeto test negative
- 格兰氏阴性 gélánshìyīnxìng gram-negativeGram-negative (of bacteria)
- 革兰氏阴性 Gélánshìyīnxìng Gram-negativeGram-negative (bacteria that do not retain Gram stain, often the more dangerous kind)