ferning means A characteristic fern-like pattern on a slide viewed under low power on a microscope, used as a sign when testing for ovulation or the presence of amniotic fluid. Lexicurio rates it Sui generis — a strength score of 88 out of 100.
Etymology
From fern + -ing.
noun
- A characteristic fern-like pattern on a slide viewed under low power on a microscope, used as a sign when testing for ovulation or the presence of amniotic fluid.