Cloth Diaper Terminology

Sometimes you come across a lot of jargon and acronyms when researching about cloth diapering, and it'd be nice not to have to wrack your brain, trying to make heads or tails of it all. There's probably an extensive list somewhere, but I'll just put down the stuff I have come across, to help anyone who might be thinking about cloth diapering.

• AI2 - All-in-two. A style of diaper. Refers to diapers that have a waterproof cover, and a separate, removeable absorbent layer. The cover only needs to be changed and washed when it gets soiled (pooped on).
• AIO - All-in-one. A style of diaper. Refers to diapers that are most like disposables - it is one piece that gets put on the baby. The waterproof layer, and the absorbent layers are built into one diaper.
• aplix - velcro. Used to close the diaper. An alternative to snap buttons.
• booster - a pad used to increase absorbency. Usually used for overnight. 
• CD - cloth diaper
• cover - the outer layer of a cloth diaper. It can be waterproof (plastic), or water resistant (usually wool or fleece)
• diaper pail - a large container used to store dirty diapers until laundry day.
• diaper sprayer - a water sprayer that attaches to the toilet to remove poop from diapers without needing to manually scrape. Regardless of type of diaper, poop should not go into the garbage; it should go into the toilet, where it can be treated at a sewage plant.
• doubler - a pad for the purpose of increasing absorbency. Often for overnight use. Generally not suitable for use as an insert on its own because it tends to be small.
• fitteds - an absorbent option. These are in the shape of a diaper, as opposed to a rectangle.
• flats - an absorbent option. It is a huge piece of cloth that you can fold into as many layers as you like, and into whatever shape or size you need. 
• gusset - a diaper feature. Refers to a elasticized ridge around the leg on the inside of the cover or diaper. It works as a second barrier to help contain leaks or poop.
• hook and loop closure - velcro. Used to close the diaper. An alternative to snap buttons.
• insert - an absorbent option. It usually refers to something that resembles a maxi pad in shape. In casual conversation, it can also refer to a prefold.
• lanolize - process to make wool water resistant. Lanolin is an oil found in wool.
• liner - a thin piece of material to be place between the diaper and baby. Often disposable for the purposes of shaking poop into the toilet without needing to touch it.
• OS - one-size. Able to fit baby from birth to potty-training. Usually, the weight range is 8-35 lbs (about 3.5 -16 kg). 
• pail liner - a bag to place inside a large container used to hold dirty diapers.
• pocket diaper - a style of diaper. Refers to a cover that has two layers. The inner layer has openings where you can put in absorbent material, effectively making the diaper like an AIO (all-in-one).
• prefold - an absorbent option. It is a rectangle with several layers of cloth. The middle third of the rectangle has twice as many layers as the two outer thirds. They come in different sizes.
• PUL - polyurethane laminate. A plastic, waterproof material. It is applied as a thin layer to fabrics.
• shell - another name for cover, often referring to one that is waterproof - the outer layer of a cloth diaper.
• Snappi - a fastener for use with flats or prefolds, to be used instead of safety pins. It has teeth like tensor bandage clips.
• snaps - buttons to close the diaper. An alternative to velcro.
• swim diaper - for use in the water. They work to contain solids (poop), but generally allow liquids to pass. Absorbent materials are not used, because the absorbed water would weigh down the child.
• trifold - a way of folding a prefold. The prefold is folded into thirds, making one thick pad, to be laid down inside a cover.
• velcro - used to close the diaper. An alternative to snap buttons.
• wetbag - a waterproof bag. Often used to hold dirty diapers in a diaper bag.