1. (noun) the first light of day

• aurora
• break of day
• break of the day
• cockcrow
• dawn
• dawning
• daybreak
• dayspring
• first light
• morning
• sunup

1. (noun) the first light of day

• hour
• time of day

2. (noun) atmospheric phenomena accompanying the daily appearance of the sun

• atmospheric phenomenon

3. (noun) the daily event of the sun rising above the horizon

• periodic event
• recurrent event

1. (adjective) of an industry or technology; new and developing

• new

1. (noun) the first light of day

• auroral
• auroral
• aurorean
• aurorean
• dawn
• dawn

1. (noun) the first light of day

• sundown
• sunset