an equation of the first degree, a simple equation

first edition or impression

first hemstitch, first line of a couplet or poem

first opening couplet of a ghazal

quadratic equation

(law) first-party, original owner of a property

degree, temperature of fever

smallest

lack of equality, being inequality, being inequality in social status, wealth, or opportunity between people or groups

integral equation

differential equation

teaching of equality, especially social equality, such as equality in education, rights, and in opportunities of development

at most, at farthest, in the first degree

at least

first round, very first time, beginning period,

(geography) coastal weather

level of conundrum

Celsius

initial days love

childhood

first day, first day, beginning, start, the day of creation

first step

the first stage

first destination, first stage

first sight

best creation

introduction, prologue, initiating step

the first creature, the first wisdom, the reason behind the existence of other creatures

to go in trance

basic prerequisite, first condition

high rank, high status

Adam

first row, first line, rank

first hit, first blow