[あんていき, anteiki](n) stable period (with ref. to pregnancy, typically from 4th month when the placenta is fully formed, morning sickness usually goes away and risk of miscarriage decreases)[Add to Longdo]
[いちぞういちげん, ichizouichigen](n) { Buddh } 16, 800, 000-year period over which a human lifespan increases from ten years to 84, 000 years (by one year per century) and then decreases back to ten (by one year per century)[Add to Longdo]