Synthetic
Traits
Constructed (Ex) For effects targeting creatures by type, synthetic creatures count as both their actual creature type and constructs (whichever type allows an ability to affect them for abilities that affect only one type, and whichever type is worse for abilities that affect both creature types). They receive a +2 racial bonus to saving throws against disease, mind-affecting effects, poison, and sleep, unless those effects specifically target constructs. In addition, synthetic creatures do not breathe or suffer the normal environmental effects of being in a vacuum. |
Synthetic (Ex) The creature is affected by any ability that specifies it functions against androids. |
Synthetic creatures are constructed through the use of extremely advanced technology, similar to that which makes androids possible.
Source
Alien Archive pg. 151