predominate

predominate

CEFR: C1-C2 /pre-dom-i-nate/ [p.r.ih0.d.aa1.m.ah0.n.ey2.t]

You should make sure that you understand the difference between “dominate” and "predominate" as this is crucial to understand the differences between the following words: dominance and predominance and dominant and predominant later.

To help you, we have summarized the differences for you here. As a rule of thumb, you should use dominate when you want to express the meaning of “control or power” and when you have an object. You should use predominate when you refer to something being the most common or being widespread in a certain area. Use dominate when you speak about the influence of sth. and predominate when you talk about numbers.

You may encounter the word "dominate" in your history or politics class as well. Like in the following textbook sample:

Example Sentences:
The Han Dynasty of China has dominated much of ancient East Asia for a long time.

As said before, dominate can mean 'to be the most common” as well' This usage appears quite often in TOEFL academic lectures or passages. So, let's look at some TOEFL academic style example sentences:

Example Sentences:
Mars' atmosphere is dominated by carbon dioxide. = Carbon dioxide is the most abundant gas in Mars' atmosphere.
Invertebrates dominate deep sea regions = Invertebrates are the most common species in deep sea regions. Invertebrates are animals without a backbone.

The word predominate is sometimes used with the preposition “over”. So when “A predominates over B” means “A is more common than B”. Let's look at the following examples:

Example Sentences:
Pine trees predominate over oak trees in this park.
In this area, immigrants predominate over local people.
In the surface soil, oxygen generally predominates over carbon dioxide.

Okay! Since here the meaning of dominate is “to be the most common”, we can actually use predominate to convey the same meaning. For instance, we could say “Invertebrates predominate in deep sea regions.” instead of “invertebrates dominate deep sea regions.” I will explain why we have to use "in” here in a bit.

Remember we cannot always replace dominate with predominate. Take this sentence here for example: "Our company dominates the market for operating systems." Here dominate means have power and influence over the market. If we use the verb predominate, the sentence becomes "Our company predominates in the market for operating systems. (! awkward )". That's not completely wrong, but native speakers wouldn't normally write or say it like that. This is because “predominate” is not often used in the sense of “control or rule sth” while dominate is. Let me give you a better example using predominate:

Example Sentences:
It appears that oak trees predominate in this forest. (Here it means oak trees are the most common trees in this forest)

Okay! There is another difference between dominate and predominate. The verb “predominate” is an intransitive verb, meaning it doesn't take an object, whereas dominate is a transitive verb, meaning it does take objects. This is why we used “in” with predominate before. Let's look at the following example sentence using “dominate”

Example Sentences:
Carbon dioxide dominates Mars' atmosphere.

"Dominate" and "predominate" can be used interchangeably in some sentences, normally dominate is used to mean “to have or exert power or influence over sth./sb.” "Predominate" on the other hand is mostly used as “to be the most common”. However, "dominate" can mean “to be the most common” as well and this is where it gets confusing. But more on this later. Let's talk about dominate in the sense of “to rule or control sth.” first.

Dominate here is almost always used as with an object. We often see it used in business and sports. Let's have a look at some examples:

Example Sentences:
Google and Facebook dominate the fast-growing market for online advertising.
Our company dominates the market for operating systems.
The Chicago Bulls dominated the NBA in 1996.

As you can see, the verb “dominates” takes the object, which is “Mars' atmosphere. We can change this sentence using predominate because dominate here means being the most common. But we cannot simply exchange the two words. We have to write it like this:

Example Sentences:
Carbon dioxide predominates in Mars' atmosphere.

So we have to use the preposition “in” here, since “predominate” doesn't take a direct object.

Okay! Let's look at more example sentences of the verb “predominate” where the same applies: :

Example Sentences:
Older people predominate in this neighborhood.
Rain predominates in the tropical regions. (This means that there is a great deal of rain in the tropical regions)
Cottages predominate along the beach. (This means most of the buildings along the beach are cottages)