The ancestor of tigers and snow leopards also branched off around 3.9 million years ago. The tiger then began to evolve into a unique species toward the end of the Pliocene epoch, about 3.2 million years ago.That makes the tiger and snow leopard âsister speciesâ, the researchers report in the journal Molecular Phylogenetics and Evolution.he ancestor of tigers and snow leopards also branched off around 3.9 million years ago. The tiger then began to evolve into a unique species toward the end of the Pliocene epoch, about 3.2 million years ago.
4. isolation - (psychiatry) a defense mechanism in which memory of an unacceptable act or impulse is separated from the emotion originally associated with it. psychiatry, psychological medicine, psychopathology-the branch of medicine dealing with the diagnosis and treatment of mental disorders.. isolation - (psychiatry) a defense mechanism in which memory of an unacceptable act or impulse is separated from the emotion originally associated with it. psychiatry, psychological medicine, psychopathology-the branch of medicine dealing with the diagnosis and treatment of mental disorders.
Pronunciation: /ËÊÉªsÉleÉªt/. 1 Cause (a person or place) to be or remain alone or apart from others: a country which is isolated from the rest of the world. More example sentences. 1  First of all, we put ourselves in a position where we were really isolated from our friends and family.oun. Pronunciation: /ËÊÉªsÉlÉt/. 1 A person or thing which has been or become isolated: social isolates often become careless of their own welfare. More example sentences. 1  The men who end up on Skid Row are social isolates. 2  But in high school, they tended to be outsiders-social isolates or whatever.