engaging in speech. action of talking. To make a formal speech about something.

fact or phenomenon of light, radio waves, etc. being deflected in passing obliquely through interface between one medium and another or through medium.

intellectual and practical activity encompassing systematic study of structure and behaviour of physical and natural world.

cement or mortar used to fill joints of brickwork or masonry. To indicate something with your finger to others.

(Food) requiring very little preparation. A very short period of time.

leaving one with pleasantly satiated feeling. Metal added to repair teeth. To use (time); to do something during.

restricted in size, amount, etc.. To stop or prevent an increase past a point.

course along which person or thing moves. Describes the way you are going, e.g. North.

used for emphasis or to express mild annoyance. To move into a different position quickly.

as truth or facts.

Occasion when something can be seen, e.g. a movie. To explain or teach how something is done.

information and skills acquired through experience and education.

perceive intended meaning of.