es el mayor

is the biggest

→ ser
phrase Uncommon #9,377
is the biggest Used to say something or someone is the largest, greatest, or most important in a group. Also common before nouns, as in 'the biggest bank' or 'the biggest fan.'
SP: Mi hermano es el mayor de la familia.
EN: My brother is the oldest in the family.

El Sahara es el mayor desierto del mundo.

The Sahara is the largest desert in the world.

Hamburgo es el mayor puerto de Alemania y el tercero mayor de Europa.

Hamburg is Germany’s largest port and the third largest in Europe.

Él es el mayor de los dos.

He is the older of the two.

Es el mayor de mi grupo.

He is the oldest in my group.

Vic es el mayor fan de los Zeppelin.

Vic is the biggest Zeppelin fan.

— Casi famosos (2000)

Él es el mayor Warren.

He is the older Warren.

— Lagaan: Érase una vez en la India (2001)

San Pablo es el mayor productor de huevos del país.

San Pablo is the country's largest egg producer.

Argelia es el mayor proveedor de gas de España.

Algeria is Spain’s largest gas supplier.

Grecia es el mayor enemigo de Albania.

Greece is Albania's biggest enemy.

Él es el mayor de dos chicos.

He is the older of two boys.

UBS es el mayor banco privado de Europa.

UBS is the largest private bank in Europe.

Él es el mayor.

He is the oldest.

— American Gangster (2007)

Es el mayor hallazgo de la historia.

It is the greatest discovery in history.

— El quinto elemento (1997)

Gaza es el mayor campo de concentración del mundo.

Gaza is the world's largest concentration camp.

Él es el mayor arquitecto que ha vivido jamás.

He is the greatest architect who ever lived.