A blackboard is a piece of slate stone on which people can write multiple times and erase what they wrote. One can use chalk to write on the surface and then remove it easily even with bare hands.
The term "personnel" is most properly defined as people that are employed in an organization. It can also mean people that are engaged in certain things such as military service.
The term maternal properly defined as being motherly or a characteristic of being a mother and inherited or derived from the female parent. Its first known use was back in the 15th Century.
The term conserve can be defined as protecting from loss. It can also be defined as using something sparingly or being careful with something. Conserving energy for later use is an example using the term.
The term called 'Onboard' can be properly defined in a large variety of different ways. These ways include, but are not limited to, somebody being on something ready to go, or carried within a vehicle.
The term screenplay is defined as the script of a movie or film. To be a screenplay, the script would include screen directions as well as acting instructions.
The term remedy is best defined by something that cures a disease an individual(s) may have or that repairs or corrects bodily injury to an individual.
Properly defined, the word aphorisms refers to original thoughts of distinction, either spoken or written. An aphorism is typically expressed in a concise, literal and memorable way.
Blackboards are made of slate.
The duration of Blackboards is 1.42 hours.
Blackboards were originally made of slate. Modern "blackboards" are white and are made of synthetic materials.
Molecular is defined as something of, related to, or consisting of molecules. Another definition of molecular is something of or related to a basic form or structure.
According to the Merriam-Webster Unabridged Dictionary, "lubricious" is defined thus: "marked by wantonness" and "having a smooth or slippery quality".