Secretion is the movement of material from one point to another, e.g. secreted chemical substance from a cell or gland. In contrast, excretion, is the removal of certain substances or waste products from a cell or organism. The classical mechanism of cell secretion is via secretory portals at the cell plasma membrane called porosomes. Porosomes are permanent cup-shaped lipoprotein structure at the cell plasma membrane, where secretory vesicles transiently dock and fuse to release intra-vesicular contents from the cell.
Secretion in bacterial species means the transport or translocation of effector molecules for example: proteins, enzymes or toxins (such as cholera toxin in pathogenic bacteria for example Vibrio cholerae) from across the interior (cytoplasm or cytosol) of a bacterial cell to its exterior. Secretion is a very important mechanism in bacterial functioning and operation in their natural surrounding environment for adaptation and survival.
To extract a substance from blood, sap, or similar to produce and emit waste for excretion or for the fulfilling of a physiological function.
“The royal jewels were secreted away in the middle of the night, sub rosa.”
Knowledge that is hidden and intended to be kept hidden. from later 14th c.
“Can you keep a secret? So can I.”
Something not understood or known.
The genital organs.
Being or kept hidden. from late 14th c.
“We went down a secret passage.”
Withdrawn from general intercourse or notice; in retirement or secrecy; secluded.
Faithful to a secret; not inclined to divulge or betray confidence; secretive, separate, apart.
To make or keep secret. from late 16th c.
To hide secretly.
“He was so scared for his safety he secreted arms around the house.”
not known or seen or not meant to be known or seen by others
“how did you guess I’d got a secret plan?”
“the resupply effort was probably kept secret from Congress”
not meant to be known as such by others
“a secret drinker”
fond of or good at keeping things about oneself unknown
“he can be the most secret man”
something that is kept or meant to be kept unknown or unseen by others
“a state secret”
“at first I tried to keep it a secret from my wife”
something that is not properly understood; a mystery
“I’m not trying to explain the secrets of the universe in this book”
a valid but not commonly known or recognized method of achieving or maintaining something
“the secret of a happy marriage is compromise”
a prayer said by the priest in a low voice after the offertory in a Roman Catholic Mass.