Some say that certain aspects, such as the semi, mean less or are minor but I’ve experienced semi (for example) as being half .  Half the time that person has the effect of a full on aspect.  So if they have a semi-square, it means that half the time they have a square aspect.

A semi is just as powerful but isn’t constant. A semi is not less in effect but it is less in amount of time the full effect is experienced.