The implantation of a fertilized egg is estimated to take place about 9 days (+/-) after ovulation. So, once conception has taken place, the blastocyst has to travel up into the uterus, and then implantation takes place once the blastocyst has found the spot in the uterine wall that it wants to attach to.
The definition of gratuity is a sum of money given to someone who provides service or a favor as a way to show graciousness or thankfulness. An example of gratuity is a tip left for a server at a restaurant. gratuity. pl. gratuity.
Tips vs. Gratuity. The difference, according to the IRS, is that a tip is a payment offered directly to a worker and in no way processed or taxed by the employer. A gratuity is a payment provided to the employee that has been collected, allocated, reported and taxed by the employer.