OP
Open Pollination
Open Pollination is when a plant is allowed to pollinate openly not under controlled conditions, cleistogamy. Pollination may take place because of bees, wind, insects, or other natural means. Human hands can contribute to open pollination by taking one flower from an OP plant and touching it to the rest of the flowers on the same plant and-or neighboring OP plants. Open Pollination may be used contribute to the biodiversity of a species as it produces more plants with a wide variety of new genetic traits.
1. The cannabis industry in Washington state is an entrepreneur's market right now. It's totally OP.

2. The original plant was an Heirloom from my grandmas greenhouse. Since she gave it to me I've been growing it outside in my garden. It's OP so who knows what might have created since then.

3. I only grow plants that are OP because I don't believe in the proliferation of genetically modified rapeseed.

4. My plants may be OP but my marriage is not!
by NWNorwegian February 01, 2013
Op
1. To express emotion toward a certain situation
2. To break an awkward silence
3. To stop someone's incessant nagging/complaining
1. "Hey, I need to go home" "Op"
2. *Silence*..."op" "Dude, that was awkward"
3. "You're stupid, and you need to pick up the house, and you need to go back and..." "Hey, hey,...op"
by Jö-D'n November 22, 2009
op
1. An action word used when someone commits an unexpected error such as, falling, dropping something or saying something inapropiriate depending on the setting.

2. An action word used when something good occurs unexpectedly.
When Carlos asked me to agree with him at the soccer field, I flipped him off and he said, "op!"
by Carlos Cortes November 05, 2009
op
an expression used after you have heard some strange, weird, or new news.

also used after someone says or does something really weird.
for example:

"that girl starting doing the worm in math class!"

"op! are you kidding?!"

or

"ed asked me to prom..."
"op! no he did not!"
by opfreakygurl September 13, 2009
op
1. Operative or Operation.
2. Observation Post. Military Term.
1. "I'm a Covert Op on a Top-Secret Op."
2. We'll set up an O.P behind these bushes."
by Diego August 25, 2003
OP
1)noun.Used in the lolita community for "One "Piece,as in a dress that needs no blouse.

2)noun.Used in thae forums as "original poster,"or "Original post."

3)verb.Used in battle instances as "Overpowered."
1)"The new OP from Angelic Pretty is so cute!"

2)"Dude,read the OP."

3)"He just got OPed!
by Miss Lolipopp July 17, 2008
OP
online pussy, women on teh interwebs usually female posters in message forums
everytime an op posts the leg humpers come out to play
by scifi March 20, 2008
OP
Opening Post. The first post in a topic on an online discussion board, with which the topic is "opened".
- What's the URL?
- Read the OP!
by Mr. British July 17, 2006
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