| 单词 | jello sign |
| 释义 | Jello signJello™ signObstetrics A popular term for the characteristic undulation of the scrotum that occurs with fetal limb movement, a 'soft' criterion for determining an infant's sex by ultrasonography; seen after the 22nd gestational wk, the movement is likened to the jiggle of a proprietary brand of instant gelatin. |
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