Occurring or existing before conception.
| 单词 | θ18761 |
| 释义 | the world > life > biology > biological processes > procreation or reproduction > conception > [adjective] > preconception or pre-implantation (2) preconceptional1904 Occurring or existing before conception. preimplantation1934 Occurring or existing before implantation of a fertilized ovum in the wall of the uterus, esp. between fertilization and implantation. |
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