These structures make it harder for males to achieve intromission.

Now unless the water is very cold, intromission can take place with subsequent coitus.

The stimulation following intromission causes the female to be immobilized.

Fertilization occurs by contact transfer without intromission similar to some lizards.

Also, they may evolve shield over their genital openings to prevent intromission.

A pup may be mounted by its abductor but intromission does not occur.

Intromission lasts between 10 and 20 minutes.

The intromission apparently gave you quite a jolt, enough to activate the virus."

He then attempts to restrain the female in order to maneuver his tail under hers to position himself for intromission.

The front legs of the male hang loosely and intromission takes the form of a "copulatory jump".

The type of rugged instrument, in short, one would use on an animal--a patient that might squirm during intromission.

The second theory, the intromission theory supported by Aristotle and his followers, had physical forms entering the eye from an object.

In this text, several situations of decreolization / Portuguese intromission can be noted:

Intromission may refer to:

"Intromission."

Al-Haytham held the intromission theory of vision, offering many reasons against the extramission theory.

Now I have to look up intercourse and that leads to intromission, which leads to intromittent, the copulatory organ of any male animal.

Vicious intromission is a term of Scots law denoting the unauthorised assumption of ownership, or other interference with the rights of an estate.

Cryptic female choice results from process that occurs after intromission which allows the female to preferentially fertilize or produce offspring with a particular male phenotype.

Her first intromission in politics - but I must not tell you that story, the authorities have decided you are to hear it otherwise and from a livelier narrator.

Ibn al-Haytham is also regarded as the father of optics, especially for his empirical proof of the intromission theory of light.

Penile translocation is sometimes performed in cattle to produce a "teaser bull", which retains its full libido, but is incapable of intromission.

Being hostile to the crusade as an intromission of material force into religion, they had even prayed for the defeat of Louis IX's crusades.