portion of food served to one person at one time. To make something better or less difficult.

activity natural to or purpose of person or thing. Mathematical operations used in calculations. To be operating, working or achieving its purpose.

member of large group of unicellular microorganisms.

very successful, authoritative, and commanding great respect. To make something clearly different from others.

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.

separate or respective. more than two but not many. More than two but not a large amount.

Typical or distinctive. feature or quality belonging typically to person.

distinctive attribute or aspect. Special reports in a magazine or paper. have as prominent attribute or aspect.

symbol (*) used in text as pointer to annotation or footnote. mark word or piece of text with asterisk.

way people or things differ. Not of the same kinds; unlike other things. alter coat of arms.

in space separating things. at, into, or across space separating things.

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

characteristic of one thing or person, so serving to identify it. To make something clearly different from others.

A substance forming the cell walls of many bacteria, consisting of glycosaminoglycan chains interlinked with short peptides..