Being what was wanted or needed. used to greet someone in polite or friendly way. instance or manner of greeting someone. greet someone arriving in polite or friendly way.

sympathetically aware of other people's feelings. Knowledge about something or someone. To know the meaning of language, what someone says.

tending to heal. process of making or becoming sound or healthy again. To make or become healthy or well again.

To give information, etc. to someone.

take place.

Way of doing by using special knowledge or skill.

branch of science concerned with nature and properties of matter and energy. The study of heat, light, and energy on objects.

not same as another or each other.

obstruction which makes movement or flow difficult or impossible. When objects or materials prevent onward movements.

discrete quantity of energy proportional in magnitude to frequency of radiation.

used for emphasis with following adjective functioning as adverb. Thing that is not yet known or named.

To take place or occur.

More than usual; extremely.

acquisition of knowledge or skills through study. To get knowledge or skills by study or experience.

(Of two lines) at equal distance from each other. A line on a map a set distance from the equator. be parallel to.